KINDAI UNIVERSITY


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OHMASA Mitsushi

Profile

FacultyDepartment of Human Factors Engineering and Environmental Design / Graduate School of Biology-Oriented Science and Technology
PositionAssociate Professor
Degree
Commentator Guidehttps://www.kindai.ac.jp/meikan/409-oomasa-mitsushi.html
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Last Updated :2020/09/01

Education and Career

Education

  •  - 1991 , Osaka University
  •  - 1991 , Osaka University, Graduate School, Division of Engineering
  •  - 1986 , Osaka University, School of Engineering
  •  - 1986 , Osaka University, Faculty of Engineering

Academic & Professional Experience

  •   1991 ,  - 1997 , Osaka University
  •   1991 ,  - 1997 , Osaka University, Research Assistant

Research Activities

Research Areas

  • Nanotechnology/Materials, Structural and functional materials
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Machine materials and mechanics

Published Papers

  • The effects of air cushion on the buffering performance of a marine fender made of hard rubber, Tadashi Shibue, Takashi Hayami, Mitushi Ohmasa, Noriyasu Hirokawa, Proceedings of the International Offshore and Polar Engineering Conference, Proceedings of the International Offshore and Polar Engineering Conference, 2016-January, 696 - 700, Jan. 01 2016
    Summary:© Copyright 2016 by the International Society of Offshore and Polar Engineers (ISOPE). Fenders are used for the protection of ship hull from impact forces caused at the berthing to a quay, by their buffering effects. The aim of this study is to introduce air cushioning effects to the fender design by using numerical simulation method. We estimate the buffering performances of a small rubber sphere based on the numerical simulation of a drop weight test by changing its internal air pressure. Then, a small scale rectangular rubber block with internal array of spherical holes is also checked changing their internal air pressure. Finally, the buffering performance is estimated by the maximum reactive force and converted energy amount.
  • Optimization Method of a Japanese Keypad Location for Flick Input on a Smartphone, 廣川敬康, 岩本浩弥, 中山雅崇, 渋江唯史, 速水尚, 澤井徹, 大政光史, Journal of JSEM : Journal of the Japan Society for Experimental Mechanics 15 (Special issue), Journal of JSEM : Journal of the Japan Society for Experimental Mechanics 15 (Special issue), 125 - 131, Aug. 2015 , Refereed
    Summary:スマートフォンのフリック入力による日本語文字入力における課題を示し,日本語テンキーの配置位置とサイズの最適化手法を示し検証を行った.
  • Evaluation of Ease in Carrying Object using Acceleration Sensor, 廣川敬康, 岩根敬弘, 田中淑記, 渋江唯史, 速水尚, 澤井徹, 大政光史, 9th International Symposium on Advanced Science and Technology in Experimental Mechanics (2014), 9th International Symposium on Advanced Science and Technology in Experimental Mechanics (2014), Nov. 2014 , Refereed
    Summary:日常生活での運搬動作においては,人によって運搬する場面や荷物の形状が異なり,持ちにくいという不便が生じる.段ボールとバケツを対象として,加速度センサを用いた実験を行い,揺れが低減される荷物の運搬方法を検討した.
  • Effect of the cross-sectional shape on the buffering performance of hard rubber, Tadashi Shibue, Takeshi Kajiya, Ryohei Shiba, Takashi Hayami, Toru Sawai, Mitsushi Ohmasa, Noriyasu Hirokawa, Kazuyuki Kato, Proceedings of the International Offshore and Polar Engineering Conference, Proceedings of the International Offshore and Polar Engineering Conference, 926 - 931, Jan. 2014 , Refereed
    Summary:Fender has been used for the protection of ship hull from impact forces caused at the berthing to a quay, by its shock absorbing effects. It is also useful to avoid damages to the passengers and crew, and to protect the quay. In this study, the effects of cross sectional shape of a fender on its buffering capability are examined based on the drop weight tests and the numerical simulation with FEM. This is useful for the development of a fender with high performance buffering capability. Copyright © 2014 by the International Society of Offshore and Polar Engineers (ISOPE).
  • Usability of Flick Input with Fit-key on Smartphone, 廣川敬康, 渋江唯史, 速水尚, 澤井徹, 大政光史, 8th International Symposium on Advanced Science and Technology in Experimental Mechanics (2013), 8th International Symposium on Advanced Science and Technology in Experimental Mechanics (2013), Nov. 2013 , Refereed
    Summary:スマートフォンでの日本語入力においてはフリック入力が用いられ,従来の携帯電話のトグル入力よりも負荷が大きくなるが,「フィットキー」と呼ばれる機能により付加を軽減することができる.日本語入力をしたときの筋電図によってフィットキー機能の有用性を評価した.
  • Falling Behavior Simulation of a Seated Human Body on a Carriage at Experimental Collision, 渋江唯史, 小畑忠司, 速水尚, 澤井徹, 大政光史, 廣川敬康, 加藤一行, Proceedings of the Twenty-second (2013) International Offshore and Polar Engineering Conference, Proceedings of the Twenty-second (2013) International Offshore and Polar Engineering Conference, 750 - 755, Jul. 2013 , Refereed
    Summary:高速船の衝突時に,着席している乗客の安全性を評価した.実験では高速船内の乗客の安全性を確保するために低速における衝突実験を行った.船速と乗客の挙動について,数値シミュレーションにより比較した.
  • Effect of Chip Aspect Ratio on Hydraulic Transportation of Woody Biomass, OMASA MITSUSHI, HIROKAWA NORIYASU, SAWAI TOORU, KAJIMOTO TAKESHI, 日本機械学会論文集 B編(Web), 日本機械学会論文集 B編(Web), 78(793), 1483 - 1494, Sep. 2012 , Refereed
  • Falling Behavior Simulation of a Standing Human Body on a Carriage at Experimental Collision, to Simulate a Collision Between a High Speed Ship and a Qury, 渋江唯史, 三角理恵, 速水尚, 澤井徹, 大政光史, 廣川敬康, Proceedings of the Twenty-second (2012) International Offshore and Polar Engineering Conference, Proceedings of the Twenty-second (2012) International Offshore and Polar Engineering Conference, 747 - 752, Jun. 2012 , Refereed
    Summary:高速船の衝突時に,起立している乗客の安全性を評価した.実験では高速船内の乗客の安全性を確保するために低速における衝突実験を行った.船速と乗客の挙動について,数値シミュレーションにより比較した.
  • Reduction in Energy Consumption for Pretreatment Process and Transportation of Pulverized Wood Fuel, NISHI Kenji, SAWAI Toru, OHMASA Mitsushi, HIROKAWA Noriyasu, SHIBUE Tadashi, KAJIMOTO Takeshi, スマートプロセス学会誌 = Journal of smart processing, スマートプロセス学会誌 = Journal of smart processing, 1(3), 21 - 22, May 20 2012
  • Forming Characteristics of Bio-coke with a Mixture of Bamboo and Carbonized Japanese Cedar, TORII Yusuke, MIZUNO Satoru, NISHI Kenji, ICHINO Yoshimitsu, OHMASA Mitsushi, SAWAI Toru, IDA Tamio, FUCHIHATA Manabu, Journal of Smart Processing, Journal of Smart Processing, 1(2), 63 - 70, Mar. 2012 , Refereed
    Summary:The utilization of unused biomass such as logging residues and broadleaf trees has come to attract attention to protect forests and satoyamas (a Japanese term for undeveloped woodlands near populated areas) in Japan. In this study, the modification of bio-coke fuels as an alternative to coal coke is investigated by using bamboo and Japanese cedar, which are the typical domestic woody biomass in forests and satoyamas. To improve the compressive strength under high temperature environment and the heating value of bio-coke, carbonized Japanese cedar is mixed with bamboo. The effect of the carbide mixture on the forming characteristics of bio-coke such as density, compressive strength, and heating value are experimentally clarified. The results obtained in the present study are as follows: (1) the density of bio-coke increases with increase in forming temperature and forming pressure, but is reduced by the addition of carbide as the thermoplastic polymer is reduced (2) the increase in carbide reduces the compressive strength under normal temperature environment and improves the compressive strength under high temperature environment. When the carbide content was 30%, the compressive strength under high temperature environment was 3.26MPa. (3) The addition of carbide is an effective way to improve the compressive strength under high temperature environment and to enhance the heating value of bio-coke.
  • Effect of Tree Species and Comminution Method on Comminution Energy of Woody Biomass, NISHI Kenji, OHMASA Mitsushi, HIROKAWA Noriyasu, SAWAI Toru, SHIBUE Tadashi, KAJIMOTO Takeshi, Journal of Smart Processing, Journal of Smart Processing, 1(2), 51 - 57, Mar. 2012 , Refereed
    Summary:In order to reduce the emission of greenhouse gases, much attention has been focused on energy utilization of biomass in recent years. The promotion of the utilization of domestic woody biomass contributes not only to the improvement of energy selfsufficiency, but also to the environmental protection of forests and undeveloped woodlands near populated areas or satoyamas in Japan. Typical woody biomass derived from Japanese forests and satoyamas are Japanese Cedar and Konara. When woody biomass is utilized as biomass fuel, it is important to examine the energy consumptions for pretreatments such as comminution and reforming. In this study, using Konara, Japanese Cedar, and Balsa, the effects of tree species, comminution methods, and semicarbonization of the woody biomass on comminution energy are investigated. The results obtained in this study are as follows. (1) In the case that water content is less than a fiber saturation point, the comminution energy for three species is expressed as a function of water content. In the case that water content exceeds a fiber saturation point, comminution energy for three species is expressed as a function of density. The comminution energy can be estimated by using the present empirical equations within ±50% accuracy. (2) Regarding the comminution property of semi-carbonized woody biomass, for the wood region, the empirical equations of work index depend on the comminution methods regardless of tree species and sieve of screen. For the semi-carbonized and carbonized regions, the empirical equation of work index is presented regardless of tree species, comminution methods, and sieve of screen. The comminution energy can be estimated by using the present empirical equations within ±60% accuracy.
  • Hydraulic Transportation System of Wood Chips by Hilly Terrain Pipelines, 澤井徹, 梶本武志, 大政光史, 渋江唯史, 西健治, Proceedings of the 22th International Symposium on Transport Phenomena, Proceedings of the 22th International Symposium on Transport Phenomena, 1 - 10, Nov. 2011 , Refereed
    Summary:間伐材や剪定枝といった小規模のローカル資源を活用するためには傾斜地から効率的に収集・搬出することが必要である.現実的な水力輸送を検討するために木質チップのアスペクト比を変化させ,チップ形状がチップ最大輸送流量に及ぼす影響を明らかにする.さらに,最大輸送流量を予測するための解析方法を提示するとともに,水力輸送システム運転時のエネルギー評価について考察した.
  • Falling behavior simulation of a standing passenger on a high speed ship at the collision accident, Tadashi Shibue, Takashi Hayami, Tohru Sawai, Mitushi Ohmasa, Noriyasu Hirokawa, Kenji Nishi, Proceedings of the International Offshore and Polar Engineering Conference, Proceedings of the International Offshore and Polar Engineering Conference, 858 - 864, Sep. 19 2011
    Summary:This paper presents a series of numerical simulation of a falling behavior of a standing passenger on a high speed ship at collision. A three dimensional FE (Finite Element) model of human body is used with reduced degrees of freedom to obtain the accuracy level which is required for the evaluation through the ship design within an allowable calculation time, say one day. Transient behavior of the human body at collision is estimated by using an explicit FE code (LS-DYNA, Japan Research Institute 2003) to see the effects of hand support, facing direction and friction between shoes and floor. The interaction between a human body and seats are considered based on an example of seat arrangement. Copyright © 2011 by the International Society of Offshore and Polar Engineers (ISOPE).
  • Reduction in Energy Consumption for Pretreatment Process and Transportation of Pulverized Wood Fuel, NISHI KENJI, SAWAI TOORU, OMASA MITSUSHI, HIROKAWA NORIYASU, SHIBUE TADASHI, KAJIMOTO TAKESHI, 高温学会誌, 高温学会誌, 37(2), 63 - 70, Mar. 2011 , Refereed
  • Scratch Test of Simulated Body Fluid-derived Hydroxyapatite Film on Biomedical Titanium Substrates, 速水尚, 西川博昭, 楠正暢, 松村和明, 本津茂樹, 大政光史, 澤井徹, The 3rd International Congress on Ceramics, Osaka, The 3rd International Congress on Ceramics, Osaka, Nov. 2010 , Refereed
    Summary:ハイドロキシアパタイトの接着強度に対する膜厚と化学組成の影響について,ナノスクラッチ試験を用いて検討した。パルスレーザー堆積法を用いて医療用チタンを化学量論的ハイドロキシアパタイトと擬似体液由来アパタイトで被覆し,基材密着性と剥離挙動をナノスクラッチテストによって詳細に観察した.
  • Falling Behavior Simulation of a Seated Passenger on a High Speed Ship at Accidental Collision, 渋江唯史, 速水尚, 澤井徹, 大政光史, 廣川敬康, Proceedings of the Twentieth (2010) International Offshore and Polar Engineering Conference, Proceedings of the Twentieth (2010) International Offshore and Polar Engineering Conference, Jun. 2010 , Refereed
    Summary:高速船の衝突時に,着席していた乗客の挙動を数値シミュレーションした.限られた演算時間で実用的な計算精度を得るために自由度を低減した人体の3次元解析モデルを用いた.衝突時の人体の挙動に及ぼす,人体と座席の間の摩擦や座席間隔などの影響を陽解法の有限要素法を用いて評価した.
  • Flow Characteristics in Vertical Upward Gas-Liquid Two-Phase Flow with Surfactant Additives-2nd Report, Gas-Liquid Interfacial Structure-, SAWAI TOORU, OMASA MITSUSHI, HIROKAWA NORIYASU, KAJI MASUO, FUJII MASAO, 実験力学, 実験力学, 10(1), 31 - 38, Mar. 2010 , Refereed
  • Flow Characteristics in Vertical Upward Gas-Liquid Two-Phase Flow with Surfactant Additives-1st Report, Pressure Drop Reduction-, SAWAI TOORU, OMASA MITSUSHI, HIROKAWA NORIYASU, KAJI MASUO, FUJII MASAO, 実験力学, 実験力学, 10(1), 23 - 30, Mar. 2010 , Refereed
  • Compressive Strength Properties of Bio-Solid Fuel made from Pruned Branch, SAWAI TOORU, OMASA MITSUSHI, KAJIMOTO TAKESHI, IDA TAMIO, FUCHIHATA MANABU, NAMBA KUNIHIKO, 高温学会誌, 高温学会誌, 36(1), 36 - 40, Jan. 2010 , Refereed
  • Spatio-Temporal Structure of Gas-Liquid Interface at Flooding for Two Inlet Devices of Gas Flow, Journal of JSEM, Journal of JSEM, 9, 34 - 40, Dec. 2009 , Refereed
  • Stability of Annular Flow and Flow Pattern Transition to Churn Flow, Journal of JSEM, Journal of JSEM, 8, 25 - 30, Jul. 2008
  • A simplified numerical simulation for the estimation of transient behavior of a back face seated occupant, 渋江唯史, 大政光史, Proceedings of the Twentieth (2004) International Offshore and Polar Engineering Conference, Proceedings of the Twentieth (2004) International Offshore and Polar Engineering Conference, Nov. 2004 , Refereed
    Summary:衝突時に乗客の人体に作用する加速度を評価するための簡易的な数値計算法について検討した.人体は前向きに着席している場合を主な対象とした.人体と座席を対象とした2次元解析モデルを用いて,座席やシートベルトの剛性,あるいは座席と船体との接合剛性が変化したときの最大加速度について検討した.
  • Strength and fracture properties of structural steels under dynamic loading, Fumiyoshi Minami, Jun Morikawa, Mitsushi Ohmasa, Masao Toyoda, Noboru Konda, Kazushige Arimochi, Nobuyuki Ishikawa, Takahiro Kubo, Hiroshi Shimanuki, Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE, Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE, 3, 283 - 292, Jan. 01 1997
    Summary:An investigation has been carried out on the stress/strain behavior near a notch tip under dynamic loading and its influence on the fracture property of structural steels. 3D FE-analysis, taking account of the strain rate effect on the flow stress, figured out that the dynamic loading elevates a local stress near the notch tip to a large extent. This was accompanied with acceleration of the strain rate in the notch tip region. Because of high-speed straining, the concentration of plastic work in the vicinity of notch tip leads to temperature rise at the notch tip. These effects contribute to fracture behavior of materials under dynamic loading. Which effect is more dominant, stress elevation or temperature rise, depends on the toughness level of the material: For a low toughness material, the near-tip stress elevation by dynamic loading raises the ductile-brittle fracture transition temperature. By contrast, the temperature rise at the notch tip will protect the initiation of brittle fracture provided the material holds superior fracture toughness.
  • Simulation for Gaseous Reduction of Non-spherical Porous Iron Oxide, 碓井建夫, 大政光史, 森田善一郎, The Proceedings of the International Conference on Computer-assisted Materials Design and Process Simulation,1993, Tokyo, ISIJ, The Proceedings of the International Conference on Computer-assisted Materials Design and Process Simulation,1993, Tokyo, ISIJ, 60 - 65, Sep. 1993 , Refereed
    Summary:高炉内で不規則な形状の鉄鉱石がガスで還元されるときの還元速度のコンピュータシミュレーションを行った.気体の拡散速度と固体の還元速度の差が大きいため,局部的に積分を組み込む方法で数値解析を行った.酸化物が球状の場合と非球状の場合の比較や,酸化物の気孔率によって還元速度に及ぼす影響について検討した.
  • Comparison of Flow Behavior during Mold Filling of Molten Aluminum, Mercury and Water in Low Pressure Die Casting., OMASA MITSUSHI, ONAKA ITSUO, 鋳物, 鋳物, 64(3), 167 - 172, Mar. 1992 , Refereed
  • Computer Simulation of Mold Filling (II: Experiments and Compariison), 大政光史, 大中逸雄, The Proceedings of the International Conference on Modeling of Casting and Solidification Processes 1991, The Proceedings of the International Conference on Modeling of Casting and Solidification Processes 1991, 133 - 138, Nov. 1991 , Refereed
  • Computer Simulation of Mold Filling (I: Algorithm), 大中逸雄, 大政光史, The Proceedings of the International Conference on Modeling of Casting and Solidification Processes 1991, The Proceedings of the International Conference on Modeling of Casting and Solidification Processes 1991, 125 - 131, Nov. 1991 , Refereed
  • Comparison of Measured and Simulated Water Flow in Low Pressure Dic Casting., OMASA MITSUSHI, ONAKA ITSUO, 鋳物, 鋳物, 63(11), 883 - 888, Nov. 1991 , Refereed
  • Computer Simulation of Mold Filling by Direct Finite Difference Method., OMASA MITSUSHI, ONAKA ITSUO, 鋳物, 鋳物, 63(10), 817 - 822, Oct. 1991 , Refereed
  • Re-examination of Method of Kinetic Analysis on the Rate of Stepwise Reduction of a Single Sinter Particle with CO-CO2-N2 Gas Mixture, 碓井建夫, 近江宗一, 大政光史, 森田善一郎, The Iron and Steel Institute of Japan, The Iron and Steel Institute of Japan, 31(5), 425 - 433, May 1991 , Refereed
  • Comparison of Measured and Simulated Fulid Flow in Low Pressure Die Casting, 大中逸雄, 大政光史, 武内孝, The Proceedings of the International Conference on Modeling of Casting, Welding and Advanced Solidification Processes 5th, The Proceedings of the International Conference on Modeling of Casting, Welding and Advanced Solidification Processes 5th, 783 - 788, Oct. 1990 , Refereed
  • Effectiveness of a Balance Chair for Maintaining a Seating Posture During Light-Duty Work, Noriyasu Hirokawa, Takahiro Tanaka, Ken'ichi Itose, Tadashi Shibue, Takashi Hayami, Toru Sawai, Mitsushi Ohmasa, ADVANCES IN PHYSICAL ERGONOMICS AND HUMAN FACTORS, ADVANCES IN PHYSICAL ERGONOMICS AND HUMAN FACTORS, 489, 213 - 224, 2016 , Refereed
    Summary:This study discusses the effectiveness of using a balance chair and adjusting a desk height and working position for maintaining seating posture during light-duty work. It is important for a worker to maintain good posture to improve work efficiency and protect his or her health. However, the worker's body trunk tends to lean forward unconsciously when he or she is working on an ordinary chair. Meanwhile, a person sitting on a balance chair, which comprises a forward-declined seat and a knee pad, can maintain a posture that resembles that of standing. This study measures the body trunk angles of a subject performing light-duty work while seated on an ordinary chair and a balance chair and discusses the influence of desk height and working position.
  • Study on the safety of a patient who stands up from a chair with a crutch, Noriyasu Hirokawa, Eri Nishiyama, Noriko Hasegawa, Ken-ichi Itose, Tadashi Shibue, Takashi Hayami, Toru Sawai, Mitsushi Ohmasa, 6TH INTERNATIONAL CONFERENCE ON APPLIED HUMAN FACTORS AND ERGONOMICS (AHFE 2015) AND THE AFFILIATED CONFERENCES, AHFE 2015, 6TH INTERNATIONAL CONFERENCE ON APPLIED HUMAN FACTORS AND ERGONOMICS (AHFE 2015) AND THE AFFILIATED CONFERENCES, AHFE 2015, 3, 74 - 81, 2015 , Refereed
    Summary:This study investigates the safety and ease with which a patient stands up from a chair using a crutch, based on the trajectory of the center of gravity (CG) of the body and subjective impressions. In the study, three participants are made to stand up from a chair using a pair of crutches in seven postures that are combinations of different foot positions, crutch positions, body positions, and eye lines to consider their effects. When standing up from the chair, the CG of the body is measured by a stabilometer, and the safety and ease of standing up are determined from the trajectories, their lengths, and subjective impressions. This study suggests that standing up from the chair with a crutch position that is nearer to the body than normal is appropriate. (C) 2015 The Authors. Published by Elsevier B.V.

Conference Activities & Talks

  • 脱臼防止機構付き人工股関節の引抜き力に及ぼす寛骨臼カップ形状の影響, 川村勇樹, 谷藤祐紀, 大政光史, 山本衛, 日本生体医工学会大会プログラム・抄録集(Web),   2019
  • Estimation of pull-out forces in artificial hip joint with a preventing structure from dislocation, Yamamoto Ei, KAWAMURA Yuki, OMASA Mitsushi, The Proceedings of the Bioengineering Conference Annual Meeting of BED/JSME,   2019
  • 座面軌道が異なる起立補助椅子における足の位置による起立負荷への影響, 富山大基, 廣川敬康, 大政光史, 北山一郎, 日本人間工学会関西支部大会講演論文集,   2018 12 08
  • 脱臼防止機構を有する人工股関節の寛骨臼カップに設けたスリットによる引抜き力の調節, 川村勇樹, 谷藤祐紀, 今井大貴, 大政光史, 山本衛, 日本実験力学会講演論文集,   2018 08 27
  • 1H4-2 Analysis and Evaluation of L ine Active Mass and the Torque of the Rising M ovement with STARTING ASSISTING CHAIR., TOMIYAMA Hiroki, HIROKAWA Noriyasu, KITAYAMA Ichiro, OHMASA Mitsushi, NAKAHARA Yuki, FUKAMAKI Shou, The Japanese Journal of Ergonomics,   2018
  • 起立補助椅子における起立動作の筋活動量とトルクの分析と評価, 富山大基, 廣川敬康, 北山一郎, 大政光史, 日本人間工学会関西支部大会講演論文集,   2017 12 09
  • スマホでの日本語文字入力時における負荷分析とスマホアクセサリによる負荷軽減, 廣川敬康, 佐々木祐輝, 津村祐貴, 大政光史, ヒューマンインタフェースシンポジウム論文集(CD-ROM),   2017 09 04
  • 肘掛が連動する起立補助椅子による起立負荷の軽減, 富山大基, 大政光史, 廣川敬康, 谷渕友紀, 人間工学,   2017 06 01
  • Finite Element Analysis for Estimating Pull-Out Forces of a Newly Designed Artificial Hip Joint with a Preventing Structure from Dislocation, Kawamura Yuki, Omasa Mitsushi, Kobayashi Takayuki, Matsufuji Yoshito, Saito Makoto, Uwa Yoshinori, Washio Syoji, Yamamoto Ei, Trans. jpn. Soc. Med. Bio. Eng,   2017
    Summary:

    Total hip arthroplasty (THA) is a surgical procedure that replaces a painful osteoarthritic hip joint with artificial components. Although the THA is an efficient treatment for osteoarthritic patients, there have been some problems to be resolved. Dislocation is one of the most common deuteropathy associated with the THA. Canine THA has been recently performed for dogs with the joint pain. The dislocation is a more serious problem for dogs than humans, because it is difficult to control the movement of dogs after the THA. We have newly proposed the artificial hip joint with a preventing structure from dislocation. In this study, the pull-out forces of the joint were calculated using a three dimensional finite element analysis. The relationships between the pull-out forces and the joint structures were obtained from the analysis. We gain insights into a principle to optimally design the artificial joint that does not easily occur the dislocation.

  • 起立補助椅子の補助力と肘掛の変化による起立負荷への影響, 大政光史, 高岡亮介, 生嶋悠輔, 渋江唯司, 速水尚, 廣川敬康, 澤井徹, 日本人間工学会関西支部大会講演論文集,   2016 12 10
  • プラスチック短下肢装具歩行の分析―健常者と装具使用者の比較―, 北野将利, 北山一郎, 森岡大輔, 中野耕助, 山中隆, 大政光史, 小山秀世, 園部秀樹, 宮崎展行, 臨床バイオメカニクス,   2016 09 20
    Summary:健常者と片麻痺者のプラスチック短下肢装具装着状態における歩行の違いを調べ、装具の歩行中の挙動や役割について検討した。対象は健常男性6名(年齢29±16歳)と装具使用の脳出血による左片麻痺患者6名(男性4名、女性2名、年齢57±12歳)で、6軸力覚センサーやフレキシブルゴニオメーター等を装着したシステムにより歩行中に装具に働く荷重データを取得した。装具は非常に多く用いられているシューホンブレースを使用した。健常者のデータは特徴的な波形が得られた装具前後方向荷重において、立脚相初期では正の比較的小さい値、立脚相後期では負の大きい値が得られていた。装具使用者の荷重の変化は被検者によって差が大きかったが、大半の被検者は健常者と異なる値となった。ケイデンスおよび歩幅と装具腓腹部の前後方向荷重差との関係では、歩幅と前後方向荷重差との間に強い相関を認めた。被検者が装具から受ける荷重の大きさは歩幅ごとにある程度類推できた。
  • スマホ首の回避と使いやすさの向上を目指したスマホの操作姿勢, 廣川敬康, 東敬之, 糸瀬健一, 渋江唯司, 速水尚, 大政光史, ヒューマンインタフェースシンポジウム論文集(CD-ROM),   2016 09 06
  • バランスチェアの利用と作業位置の調整によるデスクワーク時の姿勢保持, 廣川敬康, 田中隆裕, 糸瀬健一, 渋江唯司, 速水尚, 澤井徹, 大政光史, 人間工学,   2016 06 25
  • プラスチック短下肢装具使用者の歩行分析, 北野将利, 北山一郎, 中野耕助, 山中隆, 池原用祐, 大政光史, バイオメカニズム学術講演会予稿集,   2015 11 28
  • プラスチック短下肢装具使用者における歩行中での有限要素解析, 中野耕助, 北山一郎, 北野将利, 山中隆, 池原用祐, 大政光史, バイオメカニズム学術講演会予稿集,   2015 11 28
  • 緩衝材の空気緩衝効果の数値シミュレーション, 渋江唯司, 速水尚, 澤井徹, 大政光史, 廣川敬康, 日本機械学会年次大会講演論文集(CD-ROM),   2015 09 12
  • 温室換気用ソーラーチムニーの断面形状および配置角度が換気流量に及ぼす影響, 天野彰浩, 坂本裕耶, 澤井徹, 渋江唯司, 大政光史, 日本実験力学会講演論文集,   2015 08 28
  • 松葉杖使用者の椅子からの起立動作時における安定性に関する研究, 廣川敬康, 西山絵理, 長谷川典子, 糸瀬健一, 渋江唯司, 速水尚, 澤井徹, 大政光史, 人間工学,   2015 06 13
  • 起立補助椅子の肘掛の形態による起立負荷への影響, OMASA MITSUSHI, IKUSHIMA YUSUKE, SHIBUE TADASHI, HAYAMI TAKASHI, SAWAI TOORU, HIROKAWA NORIYASU, 日本設計工学会研究発表講演会講演論文集,   2015 05
  • 潜熱蓄熱板を組み込んだ温室換気用ソーラーチムニーの最適設計, 天野彰浩, 早川成樹, 澤井徹, 大政光史, 渋江唯司, 日本機械学会関西支部定時総会講演会講演論文集,   2015 03 16
  • プラスチック短下肢装具使用時の歩行分析データに基づく有限要素解析, 中野耕助, 北山一郎, 山中隆, 北野将利, 大政光史, 日本機械学会関西支部定時総会講演会講演論文集,   2015 03 16
  • Polyetheretherketoneのセル構造体設計・3D造形と人工骨への応用, 速水尚, 楠正暢, 田村将一, 田村将一, 岡田和真, 岡田和真, 廣川敬康, 渋江唯司, 大政光史, 日本設計工学会研究発表講演会講演論文集,   2015
  • プラスチック短下肢装具に関する歩行分析(使用者と健常者の比較), 北山一郎, 北野将利, 中野耕助, 山中隆, 池原用祐, 大政光史, 小山秀世, 森本高史, 園部秀樹, 日本設計工学会研究発表講演会講演論文集,   2015
  • スマートフォンのテンキーの配置位置の最適化, HIROKAWA NORIYASU, IWAMOTO HIROYA, NAKAYAMA MASATAKA, SHIBUE TADASHI, HAYAMI TAKASHI, SAWAI TOORU, OMASA MITSUSHI, ヒューマンインタフェースシンポジウム論文集(CD-ROM),   2014 09 09
  • J0120103 Numerical Simulation of a Seat Belt under the Dynamic Loading, SHIBUE Tadashi, Nishiura Ryohei, HAYAMI Takashi, SAWAI Toru, OHMASA Mitsushi, HIROKAWA Noriyasu, Mechanical Engineering Congress, Japan,   2014 09 07
    Summary:Dynamic behavior of a seatbelt is estimated by the numerical simulation method based on the drop weight test result of the seat belt under the pre-tension force. Material property of the seat belt to simulate dynamic behavior is identified through iterative simulations changing its Young's modulus value. The effect of mesh size of the simulation model on the simulation results is also considered. As results of this study, a modelling method including material property and mesh size are presented.
  • 動荷重を受けるシートベルトの数値シミュレーション, 渋江唯司, 西浦凌平, 速水尚, 澤井徹, 大政光史, 廣川敬康, 日本機械学会年次大会講演論文集(CD-ROM),   2014 09 06
  • 木質バイオマス乾燥用パッシブソーラーシステムの換気流量に及ぼす潜熱蓄熱体設置の効果, AMANO AKIHIRO, SAWAI TOORU, FUJITA KOJI, SHIBUE TADASHI, OMASA MITSUSHI, 日本実験力学会講演論文集,   2014 08 28
  • プラスチック短下肢装具の有限要素解析, NAKANO KOSUKE, KITAYAMA ICHIRO, KITANO MASATO, YAMANAKA TAKASHI, OMASA MITSUSHI, 知能メカトロニクスワークショップ講演論文集(CD-ROM),   2014 07 12
  • 加速度センサを用いた荷物の運搬動作の解析と運搬しやすさの向上に関する研究, 廣川敬康, 岩根敬弘, 田中淑記, 渋江唯司, 速水尚, 澤井徹, 大政光史, 人間工学,   2014 06 05
  • Study on Transportation of Japanese-style bedding using a Digital Mannequin, HIROKAWA NORIYASU, MITSUI KENTARO, SHIBUE TADASHI, HAYAMI TAKASHI, SAWAI TOORU, OMASA MITSUSHI, HIROSE SHOZO, 日本人間工学会関西支部大会講演論文集,   2013 12 14
  • Usability of Flick Input with Fit-key on Smartphone,   2013 11
  • 熱流動化木粉の流動特性・成形特性に及ぼす半炭化の影響, TATSUMICHI HIROKI, SAWAI TOORU, OMASA MITSUSHI, 環境技術学会年次大会予稿集,   2013 09 13
  • Usability Analysis of Character Input with Smartphone Fit Key System, HIROKAWA NORIYASU, TAKI MISAKO, FUNASE YUKI, SHIBUE TADASHI, HAYAMI TAKASHI, SAWAI TOORU, OMASA MITSUSHI, ヒューマンインタフェースシンポジウム論文集(CD-ROM),   2013 09 10
  • J182011 Model experiments and a numerical simulation for the estimation of falling behavior of a seated passenger on the train at collision, SHIBUE Tadashi, KAWABE Kazuya, HAYAMI Takashi, SAWAI Toru, OHMASA Mitsushi, HIROKAWA Noriyasu, Mechanical Engineering Congress, Japan,   2013 09 08
    Summary:Studies based on the numerical simulation to understand the falling behavior of passengers on public transportation system have been carried out. Experimental verifications are necessary to understand the actual behavior and increase the accuracy of the simulation method. A carriage system on which a human body model can be seated is used and collision experiments are carried out under the very low speed of 0.21m/s. The movement of the carriage and the human body are measured with high speed cameras. In addition, a numerical simulation of the experiment with FEM code LS-DYNA is carried out to see the estimation accuracy of both the simulation model and the simulation method.
  • 衝突時に電車内で着座している人体の転倒挙動を求める模型実験とシミュレーション, SHIBUE TADASHI, KAWABE KAZUYA, HAYAMI TAKASHI, SAWAI TOORU, OMASA MITSUSHI, HIROKAWA NORIYASU, 日本機械学会年次大会講演論文集(CD-ROM),   2013 09 07
  • Falling behavior simulation of a seated Human body on a carriage at experimental collision, International Offshore and Polar Engineering Conference,   2013 07 , International Offshore and Polar Engineering Conference
  • Project Practice on Universal Design by using Digital Mannequin,   2013 06
  • 熱流動化木粉の粘性特性に及ぼす半炭化の影響, TATEMICHI HIROKI, SAWAI TOORU, OMASA MITSUSHI, 日本機械学会関西支部定時総会講演会講演論文集,   2013 03 16
  • Education on Universal Design by using Digital Mannequin in Kinki University, HIROKAWA NORIYASU, NISHIGAKI TSUTOMU, OMASA MITSUSHI, HIROSE SHOZO, 日本人間工学会関西支部大会講演論文集,   2012 12 08
  • Structure Analysis on Honeycomb Panel with Press Formed Core, OMASA MITSUSHI, NISHI KENJI, HIROKAWA TAKAYASU, HAYAMI TAKASHI, SAWAI TOORU, SHIBUE TADASHI, 日本機械学会年次大会講演論文集(CD-ROM),   2012 09 08
  • 衝突時のバス乗客の転倒挙動を模擬する台車実験計測, SHIBUE TADASHI, HAYAMI TAKASHI, SAWAI TOORU, OMASA MITSUSHI, HIROKAWA NORIYASU, 日本機械学会年次大会講演論文集(CD-ROM),   2012 09 08
  • Discussion on Input Method of Smart Phone based on EMG, HIROKAWA NORIYASU, SHIOTANI SATOSHI, SHIBUE TADASHI, HAYAMI TAKASHI, SAWAI TOORU, OMASA MITSUSHI, ヒューマンインタフェースシンポジウム論文集(CD-ROM),   2012 09 04
  • カキ剪定枝の等速押出加工時における成形および流動特性, TATSUMICHI HIROKI, SAWAI TOORU, OMASA MITSUSHI, 環境技術学会年次大会予稿集,   2012 09 03
  • Education of Universal Design by using Digital Mannequin, HIROKAWA NORIYASU, NISHIGAKI TSUTOMU, OMASA MITSUSHI, HIROSE SHOZO, 日本機械学会設計工学・システム部門講演会論文集(CD-ROM),   2012 09
  • Ergonomic Design of Shower Chair by using Digital Manikins, HIROKAWA NORIYASU, SUMIKURA TAKANOBU, SHIBUE TADASHI, HAYAMI TAKASHI, SAWAI TOORU, OMASA MITSUSHI, HIROSE SHOZO, 人間工学,   2012 06
  • Falling behavior simulation of a standing human body on a carriage at experimental collision, to simulate a collision between a high speed ship and a quay, International Offshore and Polar Engineering Conference,   2012 06 , International Offshore and Polar Engineering Conference
  • 木質系粉砕物燃料の前処理工程(粉砕・乾燥・半炭化改質)および輸送におけるエネルギー消費量の低減, NISHI KENJI, SAWAI TOORU, OMASA MITSUSHI, HIROKAWA NORIYASU, SHIBUE TADASHI, KAJIMOTO TAKESHI, スマートプロセス学会総合学術講演会講演概要,   2012 05 20
  • 携帯電話のキー操作時における母指の曲げの分析, HIROKAWA NORIYASU, TAMAOKI YOSUKE, MIYAMOTO TATSUYA, SHIBUE TADASHI, HAYAMI TAKASHI, SAWAI TOORU, OMASA MITSUSHI, ヒューマンインタフェースシンポジウム論文集(CD-ROM),   2011 09 13
  • J121012 Falling behavior of the standing passenger with a knob in the hand at sudden stop of a bus, SHIBUE Tadashi, MISUMI Rie, NISHI Kenji, HAYAMI Takashi, SAWAI Toru, OHMASA Mitsushi, HEROKAWA Noriyasu, Mechanical Engineering Congress, Japan,   2011 09 11
    Summary:Transient behavior of a passenger's body standing within a bus at sudden stop is estimated based on finite element method. The purpose of this study is to estimate the effects of the velocity of the bus, the grip force of the passenger, facing direction and friction between shoes and floor on the falling behavior of a passenger's body at sudden stop. The bus model is made to represent the arrangement of a bus used for local transportation. The human body model is made to represent aged woman of about 70 years old, based on the human body scantling database of AIST Japan. As the first step of simulation, gravity effects are applied to the whole model. Then, initial velocity is applied to both the bus model and the human body model. The bus model collides with the barrier model to simulate the sudden stop of the bus. The FEM code LS-DYNA is used for current simulation.
  • G030163Effect of Core Size on Rigidity of Honeycomb Panel with Dia-cut Patterned Core, OHMASA Mitsushi, SUGIMOTO YUichi, NISHI Kenji, HIROKAWA Takayasu, HAYAMI Takashi, SAWAI Toru, SHIBUE Tadashi, Mechanical Engineering Congress, Japan,   2011 09 11
    Summary:Honeycomb panels with diamond-cut patterned core were analyzed by the finite element method applying thestatic bend load. The structure analysis were done when core size and joint shape were changed. The thickness of coreplates was decreased to keep light weight. The displacement and the stress distribution of panels were compared, andthe effect of the core size on the rigidity ofpanels was examined.
  • Effect of Core Size on Rigidity of Honeycomb Panel with Dia-cut Patterned Core, OMASA MITSUSHI, SUGIMOTO YUICHI, NISHI KENJI, HIROKAWA TAKAYASU, HAYAMI TAKASHI, SAWAI TOORU, SHIBUE TADASHI, 日本機械学会年次大会講演論文集(CD-ROM),   2011 09 10
  • バスの急停車時に椅子のグリップを掴んでいる立位乗客の転倒挙動, SHIBUE TADASHI, MISUMI RIE, NISHI KENJI, HAYAMI TAKASHI, SAWAI TOORU, OMASA MITSUSHI, HIROKAWA NORIYASU, 日本機械学会年次大会講演論文集(CD-ROM),   2011 09 10
  • State of Thumb in Operating Cellular Phone Key,   2011 09
  • 木質バイオマスの粉砕エネルギーに及ぼす樹種の影響, NISHI KENJI, SAWAI TOORU, OMASA MITSUSHI, HIROKAWA NORIYASU, SHIBUE TADASHI, KAJIMOTO TAKESHI, 日本実験力学会講演論文集,   2011 08 30
  • 木質系粉砕物燃料製造時の粉砕エネルギー評価, NISHI KENJI, SAWAI TOORU, OMASA MITSUSHI, HIROKAWA NORIYASU, SHIBUE TADASHI, KAJIMOTO TAKESHI, 日本機械学会動力・エネルギー技術シンポジウム講演論文集,   2011 06 22
  • F116 Assessment of Comminution Energy of Pulverized Wood Fuel, NISHI Kenji, SAWAI Toru, OHMASA Mitsushi, HIROKAWA Noriyasu, SHIBUE Tadashi, KAJIMOTO Takeshi, National Symposium on Power and Energy Systems,   2011 06 22
    Summary:In recent years, much attention has been focused on the energy utilization of woody biomass to reduce the emission of greenhouse gas. When the woody biomass is utilized, it is necessary to examine the energy consumption for collection of resources, pretreatment, transportation and after-treatment. The pretreatment of pulverized wood fuel is consisted of three procedures; drying, semi-carbonization and fine comminution. The purpose of the study is to investigate the comminution characteristic of the Japanese cedar thinning and the reduction in energy consumption for pretreatment process and transportation of pulverized wood fuel. Analysis of energy consumption for the pretreatment process and transportation is conducted by using the present empirical equations of work index. From the result of analysis, it is found that the semi-carbonization at a temperature of 250 degree C is effective to the reduction in total energy consumption, when the pulverized wood fuel of 2000 microns or less in particle size is utilized.
  • Ergonomic Design of Daily Use Products by using Computer Manikins, HIROKAWA NORIYASU, SHIBUE TADASHI, HAYAMI TAKASHI, SAWAI TOORU, OMASA MITSUSHI, HIROSE SHOZO, 人間工学,   2011 06 06
  • Falling behavior simulation of a standing passenger on a high speed ship at collision accident, International Offshore and Polar Engineering Conference,   2011 06 , International Offshore and Polar Engineering Conference
  • 木質系粉砕物燃料の前処理工程におけるエネルギー消費, NISHI KENJI, SAWAI TOORU, OMASA MITSUSHI, HIROKAWA NORIYASU, SHIBUE TADASHI, KAJIMOTO TAKESHI, 日本機械学会関西支部定時総会講演会講演論文集,   2011 03 19
  • 竹とスギ炭化物を混合したバイオコークスの圧縮強度特性, TORII YUSUKE, NISHI KENJI, SAWAI TOORU, IDA TAMIO, OMASA MITSUSHI, MIZUNO SATORU, 日本機械学会関西支部定時総会講演会講演論文集,   2011 03 19
  • 803 Energy Consumption for Pretreatment Process of Pulverized Wood Fuel, NISHI Kenji, HIROKAWA Noriyasu, KAJIMOTO Takeshi, SAWAI Toru, OHMASA Mitsushi, SHIBUE Tadashi, 関西支部講演会講演論文集,   2011 03 19
  • 804 Compressive Strength Characteristics of Bio Coke with a Mixture of Bamboo and Carbide, TORII Yusuke, NISHI Kenji, IDA Tmio, OHMASA Mitsushi, SAWAI Toru, MIZUNO Satoru, The Proceedings of Conference of Kansai Branch,   2011
  • 半炭化木質バイオマスの粉砕特性に及ぼす樹種(スギ,コナラ,バルサ)の影響, NISHI KENJI, SAWAI TOORU, OMASA MITSUSHI, HIROKAWA NORIYASU, SHIBUE TADASHI, KAJIMOTO TAKESHI, 日本エネルギー学会関西支部研究発表会・石油学会関西支部研究発表会合同研究発表会要旨集,   2011
  • 木質バイオマスの粉砕特性, NISHI KENJI, ICHINO YOSHIMITSU, SAWAI TOORU, OMASA MITSUSHI, HIROKAWA NORIYASU, 高温学会総合学術講演会講演概要,   2010 12
  • Scratch Test of Simulated Body Fluid-derived Hydroxyapatite Film on Biomedical Titanium Substrates, the 3rd International Congress on Ceramics,   2010 11 , the 3rd International Congress on Ceramics
  • Characteristics Comminution of Woody Biomass, NISHI Kenji, ICHINO Yoshimitsu, SAWAI Toru, OHMASA Mitsushi, HIROKAWA Noriyasu, 高温学会誌,   2010 11
  • Stability Analyses in Natural Circulation Loop at Low Pressure Condition, Proceedings of ISEM-10,   2010 11
  • 半炭化木質バイオマスの粉砕特性に関する研究, NISHI KENJI, SAWAI TOORU, OMASA MITSUSHI, HIROKAWA NORIYASU, 環境技術学会研究発表大会及び特別講演会予稿集,   2010 09 10
  • Usability of Cellular Phone Key Layout based on EMG, HIROKAWA NORIYASU, UZAKI YOSHIMITSU, SHIBUE TADASHI, HAYAMI TAKASHI, SAWAI TOORU, OMASA MITSUSHI, ヒューマンインタフェースシンポジウム論文集(CD-ROM),   2010 09 07
  • 半炭化バイオ固体燃料の成形性, ICHINO YOSHIMITSU, SAWAI TOORU, HAYAMI TAKASHI, OMASA MITSUSHI, TAKATSUJI WATARU, IMANISHI TOSHITO, YAMAGIWA YOSHINOBU, 日本機械学会年次大会講演論文集,   2010 09 04
  • Effect of Core Shape on Rigidity of Honeycomb Panel with Dia-cut Patterned Core, OMASA MITSUSHI, SHIBUE TADASHI, HIROKAWA TAKAYASU, HAYAMI TAKASHI, SAWAI TOORU, 日本機械学会年次大会講演論文集,   2010 09 04
  • 電車内の立位乗客の転倒挙動シミュレーション, SHIBUE TADASHI, HAYAMI TAKASHI, SAWAI TOORU, OMASA MITSUSHI, HIROKAWA TAKAYASU, 日本機械学会年次大会講演論文集,   2010 09 04
  • G0300-9-4 Effect of Core Shape on Rigidity of Honeycomb Panel with Dia-cut Patterned Core, OHMASA Mitsushi, SHIBUE Tadashi, HIROKAWA Takayasu, HAYAMI Takashi, SAWAI Toru, 年次大会講演論文集 : JSME annual meeting,   2010 09 04
    Summary:Honeycomb panels with diamond-cut patterned core were analyzed by the finite element method applying the static bend load. The structure analysis were done when the angle or polygonal shape of the core were changed. The thickness of core plates was decreased to keep light weight. The stress distribution and the displacement of around the joint parts were compared, and the effect of the core shape on the rigidity of panels was examined.
  • J1201-1-3 A fall behavior simulation of a standing passenger in a train, SHIBUE Tadashi, HAYAMI Takashi, SAWAI Toru, OHMASA Mitsushi, HIROKAWA Takayasu, 年次大会講演論文集 : JSME annual meeting,   2010 09 04
    Summary:Transient behaviour of a passenger's body standing within a train at an accidental collision is estimated based on finite element method. The purpose of this study is to estimate the effects of facing direction and grip force on the behaviour of a passenger's body at the accidental collision. A passenger's body model and a train model are developed to proceed a numerical simulation within a short time.
  • G0600-7-1 Formability of Semi-Carbonized Bio-Solid Fuels, ICHINO Yoshimitsu, SAWAI Toru, HAYAMI Takashi, OHMASA Mitsushi, TAKATSUJI Wataru, IMANISHI Toshito, YAMAGIWA Yoshinobu, 年次大会講演論文集 : JSME annual meeting,   2010 09 04
    Summary:The purpose of this study is to develop "Semi-carbonized Bio-solid Fuels" used in the pulverized coal fired power plant. Experimental studies on formability of molded fuel and thermo-fluid phenomena of woody biomass are conducted to clarify the optimum molding conditions. The experimental results obtained are as follows. (1) Thermo-fluid phenomena of woody biomass: The occurrence temperature of thermo-fluid phenomena decreases as the molding pressure and the water content are increased. (2)Compression molding of semi-carbonized material: Rise in the molding temperature and the water content of woody biomass improve formability of molded fuel. It is found that the optimum molding conditions are closely related to the occurrence of Thermo-fluid phenomena of woody biomass.
  • 木質バイオマスの粉砕特性と嵩密度, SAWAI TOORU, KAJIMOTO TAKESHI, NISHI KENJI, OMASA MITSUSHI, 日本実験力学会講演論文集,   2010 08 17
  • 微細ミストによる大空間の冷房に関する研究, KAJI MASUO, OMASA MITSUSHI, SAWAI TOORU, FUJIKI SOICHIRO, KAWAUCHI TSUBASA, TSUJII YUKI, 日本混相流学会年会講演会講演論文集,   2010 07
  • Ergonomic Design with Digital Human and its Integration with EMG, HIROKAWA NORIYASU, SHIBUE TADASHI, HAYAMI TAKASHI, SAWAI TOORU, OMASA MITSUSHI, HIROSE SHOZO, 人間工学,   2010 06 19
  • Falling behavior simulation of a seated passenger on a high speed ship at accidental collision, International Offshore and Polar Engineering Conference,   2010 06 , International Offshore and Polar Engineering Conference
  • A fall behavior simulation of a standing passenger in a train at collision, SHIBUE TADASHI, MURAMOTO IZUMI, HAYAMI TAKASHI, SAWAI TOORU, OMASA MITSUSHI, HIROKAWA TAKAYASU, 日本機械学会年次大会講演論文集,   2009 09 12
  • Structure Analysis on Honeycomb Panel with Dia-cut Patterned Core, OMASA MITSUSHI, TSUJIMURA MASARU, HIROKAWA TAKAYASU, HAYAMI TAKASHI, SHIBUE TADASHI, 日本機械学会年次大会講演論文集,   2009 09 12
  • Effect of Tree Species and Moisture Content on Extrusion Process of Thermal Fluid Wood Powder, MINENO TOMOYUKI, SAWAI TOORU, HAYAMI TAKASHI, OMASA MITSUSHI, HIROKAWA NORIYASU, KAJI MASUO, 日本機械学会年次大会講演論文集,   2009 09 12
  • J0407-2-2 Effect of Tree Species and Moisture Content on Extrusion Process of Thermal Fluid Wood Powder, MINENO Tomoyuki, SAWAI Toru, HAYAMI Takashi, OMASA Mitushi, HIROKAWA Noriyasu, KAJI Masuo, 年次大会講演論文集 : JSME annual meeting,   2009 09 12
    Summary:Extrusion experiments for pruned branches from fruit tree and Japanese cedar thinning were conducted at a uniform press speed. The results obtained in the present study are as follows. (1) The formability in extrusion process is significantly affected by the forming temperature and moisture contents of samples. The molding defects are observed at a forming temperature below 120 degree C for the moisture content of 17%. It is considered that the expansion of moldings is due to the residual free water. (2) The dynamic equilibrium load decreases with increasing forming temperature and moisture content. The temperature for the thermo-fluid phenomena of wood powder depends on tree species. It is found that the forming temperature for the branches of Japanese apricot and persimmon is lower than that for Japanese cedar.
  • G0301-2-7 Structure Analysis on Honeycomb Panel with Dia-cut Patterned Core, Ohmasa Mitsushi, Sakaki Takayoshi, HIROKAWA Takayasu, HAYAMI Takashi, SHIBUE Tadashi, 年次大会講演論文集 : JSME annual meeting,   2009 09 12
    Summary:The core of the diamond cutting type was placed instead of the hexagonal core used with a usual honeycomb panel. These panels were analyzed by the finite element method when the static bend load was applied. If the area of the joint part with the surface plate is enlarged, it has been understood that the concentration of stress can be decreased, and the deflection of the panel that uses the diamond cutting type core decreases compared with the hexagon honeycomb of the same weight and the rigidity improves.
  • J0205-1-2 A fall behavior simulation of a standing passenger in a train at collision, SHIBUE Tadashi, MURAMATO Izumi, HAYAMI Takashi, SAWAI Toru, OHMASA Mitsushi, HIROKAWA Takayasu, 年次大会講演論文集 : JSME annual meeting,   2009 09 12
    Summary:Transient behaviour of a passenger's body standing within a train at an accidental collision is estimated based on finite element method. The purpose of this study is to estimate the effects of facing direction and grip force on the behaviour of a passenger's body at the accidental collision. A passenger's body model and a train model are developed to proceed a numerical simulation within a short time.
  • EMG of Flexor Muscles in Operating Cellular Phone Keys, HIROKAWA NORIYASU, OKAGAWA REIKO, TAKEHISA YOSHIHIKO, SHIBUE TADASHI, HAYAMI TAKASHI, SAWAI TOORU, OMASA MITSUSHI, ヒューマンインタフェースシンポジウム論文集(CD-ROM),   2009 09 01
  • 木粉の圧密成形時における流動化現象, SAWAI TOORU, KAJIMOTO TAKESHI, MINENO TOMOYUKI, OMASA MITSUSHI, 日本実験力学会講演論文集,   2009 08 05
  • 木粉のみを原料としたウッドプラスチックの押出成形性, MINENO TOMOYUKI, SAWAI TOORU, HAYAMI TAKASHI, OMASA MITSUSHI, HIROKAWA NORIYASU, 日本機械学会関西支部定時総会講演会講演論文集,   2009 03 16
  • 1307 Formability of Wood Plastic from Wood Powder in Extrusion Process, MINENO Tomoyuki, SAWAI Toru, HAYAMI Takashi, OMASA Mitushi, HIROKAWA Noriyasu, 関西支部講演会講演論文集,   2009 03 16
  • Structual Analysis of Truss Type Honeycomb Panel and Influence of the Core Shape on the Stiffness, OMASA MITSUSHI, SAKAKI TAKAYOSHI, 日本機械学会年次大会講演論文集,   2008 08 02
  • 1261 Structual Analysis of Truss Type Honeycomb Panel and Influence of the Core Shape on the Stiffness, Ohmasa Mitsushi, Sakaki Takayoshi, 年次大会講演論文集 : JSME annual meeting,   2008 08 02
    Summary:The truss type honeycomb panel is three laminar structure that sandwiched a core part molded as wave pattern with two pieces of plates. The core parts of the wave shape molded by press or extrusion molding and produced more relatively easily than general honeycomb panel with a core of the hexagon. This truss type honeycomb panel was analyzed, and it was examined the influence that core shape gave stiffness and strength of the whole panel. The maximum stress became higher in a neighborhood of the joint with the core part and the surface plate. The stress did not decrease when fillets added to the joint parts,. When a cross-section of the core part became triangular, strength and stiffness increased.
  • Structual Analysis of Press-Formed Honeycomb Panel, OMASA MITSUSHI, 日本機械学会年次大会講演論文集,   2007 09 07
  • 2444 Structual Analysis of Press-Formed Honeycomb Panel, Ohmasa Mitsushi, 年次大会講演論文集 : JSME annual meeting,   2007 09 07
    Summary:The honeycomb panel is used as a member for the structure that is light weight and high rigidity. There is a honeycomb structure which raised rigidity by adding the convex parts of the hexagon to one sheet by the press forming. For example, this structure is used for the top panel of the note PC. Because due to press forming, manufacturing process is simple. It is possible to adjust rigidity by changing the shape of the convex parts. The FEM analysis which changes the interval of the convex parts of this honeycomb panel was performed. It was confirmed that rigidity and strength of the honeycomb panel improved by reducing the intervals of the convex parts.
  • Stability of Annular Flow and Flow Pattern Transition to Churn Flow, 2nd International Symposium on Advanced Fluid/Solid Science and Technology in Experimental Mechanics,   2007 09 , 2nd International Symposium on Advanced Fluid/Solid Science and Technology in Experimental Mechanics
  • Response Simulation of a Human Body Seated Backwards at Collision, SHIBUE TADASHI, OMASA MITSUSHI, 日本機械学会年次大会講演論文集,   2004 09 04
    Summary:A simplified numerical simulation model to evaluate the generated acceleration value on an occupant at accidental collision is presented. Preceding study has been focused mainly on the behavior of human body seated fore faced. Addition to these studies, this study focuses on the behavior of the human body seated back faced. A series of numerical simulation is carried out with simplified 2D model of both.a human body and a seat, changing the stiffness of seat belt and connecting stiffness between a seat and a vehicle body. Finally, a possibility to evaluate the maximum acceleration value by the simulation results is shown.
  • A Simplified Numerical Simulation for nthe Estimation of Transient Behavior of a Back Face Seated Occupant, International Society of Offshore and Polar Engineers,   2004 05 , International Society of Offshore and Polar Engineers
  • Control of Mechanical Properties for the Improvement of Deformability of Structural Components., OHATA MITSURU, TANAKA NORIAKI, OMASA MITSUSHI, TOYODA MASAO, 鋼構造年次論文報告集,   1999 11 01
  • Proposition of the deformability controlling parameter of steel structure failed by local buckling., OHATA MITSURU, TANAKA NORIAKI, OMASA MITSUSHI, TOYODA MASAO, 溶接学会全国大会講演概要,   1999 09 21
  • Proposition of the deformabilit controlling parameter of steel structure failed by local buckling, Ohata Mitsuru, Tanaka Noriaki, Ohmasa Mitsushi, Toyoda Masao, Pre-Prints of the National Meeting of JWS,   1999 09 21
  • Strength and Fracture Properties of Structural Steels Under Dynamic Loading, Morikawa J, Minami F, Ohmasa M, Toyoda M, Konda N, Arimochi K, Ishikawa N, Kubo T, Shimanuki H, Pre-Prints of the National Meeting of JWS,   1997 03 15
  • Effect of Loading Rate on Stress/Strain Properties of Steel Plate with Geometrical Discontinuity, OHMASA Mitsushi, MINAMI Fumiyoshi, TOYODA Masao, KAWAI Yasuhiro, KONDA Noboru, ARIMOCHI Kazushige, Pre-Prints of the National Meeting of JWS,   1996 09 05
  • Stress-Strain Characteristics at Non-Flat Interface of Bonded Dissimilar Materials, OHMASA Mitsushi, INOUE Michinobu, TOYODA Masao, Pre-Prints of the National Meeting of JWS,   1996 03 15
  • Stress and Strain Behavior of Materials with Mechanical Heterogeneous under Dynamic Loading, NUMANO Masamitsu, KAWAI Yasuhiro, OHMASA Mitsushi, TOYODA Masao, TSUKAMOTO Mitsuo, Pre-Prints of the National Meeting of JWS,   1995 09 04
  • Improvment in Deformability of H-Beams by Applying Modified Cross Sections., OMASA MITSUSHI, MINAMI FUMIYOSHI, TOYODA MASAO, ARIMOCHI KAZUSHIGE, 鋼構造年次論文報告集,   1994 11
  • Fracture behavior of structure adhesive joints using plated steel sheets., FUKUI KIYOYUKI, TAKA TAKAO, TOYODA MASAO, OMASA MITSUSHI, 日本機械学会材料力学部門講演会講演論文集,   1994 10
  • A Study on the Hysteretic Behavior of H-Beam with Locally Increased Thickness and Pursuit of Optimum Cross Section : Improvement of the Strength Characteristics of H-Beams, Nozaki T, Ohmasa M, Toyoda M, Arimochi K, Pre-Prints of the National Meeting of JWS,   1994 09 26
  • Deformation Properties and Strength Characteristics of H-Beams with Locally Increased Thickness by Bend Test : Improvment of the Strength Caractristics of H-Beams by Cross Section Shape Control (Report 1), Ohmasa M, Minami F, Toyoda M, Arimochi K, Pre-Prints of the National Meeting of JWS,   1994 09 26
  • Improvement of the Strength Characteristics of H-Beams by Cross Section Shape Control. (Report 2). A Study on the Hysteretic Behavior of H-Beam with Locally Increased Thickness and Pursuit of Optimum Cross Section., NOZAKI TSUTOMU, OMASA MITSUFUMI, TOYODA MASAO, ARIMOCHI KAZUSHIGE, 溶接学会全国大会講演概要,   1994 09
  • Improvement of the Strength Charactristics of H-Beams by Cross Section Shape Control. (Report 1). Deformation Properties and Strength Characteristics of H-Beams with Locally Increased Thickness by Bend Test., OMASA MITSUFUMI, MINAMI FUMIYOSHI, TOYODA MASAO, ARIMOCHI KAZUSHIGE, 溶接学会全国大会講演概要,   1994 09
  • Stress Characteristics at the Interface of Bonded Dissimilar Materials Considered Micro Heterogeneity, Toyoda Masao, Ohmasa Mitsushi, Kusaka Kousaku, Pre-Prints of the National Meeting of JWS,   1994 03 13
  • Fracture behavior and strength factor of adhesive joint., FUKUI KIYOYUKI, TAKA TAKAO, TOYODA MASAO, OMASA MITSUFUMI, SHIOZAKI TAKESHI, ISAKA HIROSHI, 溶接構造シンポジウム講演論文集,   1993 11
  • Fracture behavior and strength factor of adhesive joint (Report 2) : Analytical study of adhesive joint, Fukui K, Taka T, Toyoda M, Ohmasa M, Shiozaki T, Pre-Prints of the National Meeting of JWS,   1993 08 31
  • Fracture behavior and strength factor of adhesive joint (Report 1) : Deformation properties and rupture strength of adhesive joint, Toyoda M, Ohmasa M, Shiozaki T, Isaka H, Fukui K, Taka T, Pre-Prints of the National Meeting of JWS,   1993 08 31
  • Direct observation and computer simulation of flow in a mold in the vertical diecasting method., ONAKA ITSUO, OMASA MITSUFUMI, SHU KINTO, DAIDO TETSUTARO, IKEDA TAKASHI, NAKAMURA TAKAO, 日本鋳物協会全国講演大会講演概要集,   1992 09
  • 局所繊維強化鋳造法における湯流れのシミュレーション, 大中逸雄, 朱金東, 大政光史, 日本金属学会講演概要,   1992 09
  • Thermographic Detection and Evaluation of Internal Defects, Toyoda M, Ohmasa M, Kusaka K, Itou Y, Tanaka K, Pre-Prints of the National Meeting of JWS,   1992 09 01
  • Fracture Behavior of Structure Adhesive Joint Using Plated Steel Sheets and Factors Affecting on Tensile Strength : Stress Distribution at Interface of Adhesive-bonded Steel Sheets, Toyoda Masao, Shiozaki Tsuyoshi, Ohmasa Mitsushi, Taka Takao, Fukui Kiyoyuki, Pre-Prints of the National Meeting of JWS,   1992 09 01
  • Molten Al in the low-pressure casting process. Comparison of flow behaviors when mercury or water is poured into a mold., OMASA MITSUFUMI, ONAKA ITSUO, 日本鋳物協会全国講演大会講演概要集,   1991 09
  • Fluidity simulation of cylindrical or plane casting in the low-pressure casting., OMASA MITSUSHI, TAKEUCHI TAKASHI, ONAKA ITSUO, 日本鋳物協会全国講演大会講演概要集,   1990 04
  • Numerical analysis of melt flow in low pressure die casting and water model experiment., OHNAKA ITSUO, OHMASA MITSUSHI, 日本鋳物協会全国講演大会講演概要集,   1989 04
  • 10 Statistical evaluation of rate parameters for gaseous reduction of single sinter and influence of particle size(IRONMAKING, The 114th ISIJ Meeting), Ohmasa Mitsushi, Tetsu- to- Hagane,   1987 09 04

Misc

  • Flow Structure of Liquid Film and Mechanism of Flooding in Counter-Current Two-Phase Flow, CD-ROM Proceedings of ISEM-08, 1, 6,   2008 12
  • 生体機械工学科におけるエンジニア育成のためのCAD/CAE教育, OMASA MITSUSHI, KAJI MASUO, SAWAI TOORU, Mem Sch Biol Orient Sci Technol Kinki Univ, 17, 79, 88,   2006 03 31 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902278447801523
  • Educational Program of CAD/CAE Curriculum for Training Students in the Department of Mechanical Engineering and Biomimetics, Ohmasa Mitsusi, Kaji Masuo, Sawai Toru, Memoirs of the School of Biology-Oriented Science and Technology of Kinki University, 17, 17, 79, 88,   2006 03 31 , http://ci.nii.ac.jp/naid/110006183314
    Summary:In this report, the contents of the present educational program of CAD/CAE curriculum are introduced. Finite Element Method, Fundamental and Advanced Exercises of CAD and Computer Programming are main required subjects in our department. In the school works of these subjects, students are instructed in practical skills of computer techniques.
  • TiNi形状記憶合金マイクログリッパの設計と特性評価, MIZUTANI KATSUMI, OMASA MITSUSHI, HORIBATA AKIRA, TOKUGAWA YUSUKE, Mem Sch Biol Orient Sci Technol Kinki Univ, 16, 67, 76,   2005 09 30 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902224576592210
  • A Design of Shape Memory Alloy Microgripper and Characteristic Evaluation of the Prototype, Mizutani Katsumi, Omasa Mitsushi, Horibata Akira, Tokugawa Yusuke, Memoirs of THE SCHOOL OF BIOLOGY-ORIENTED SCIENCE AND TECHNOLOGY OF KINKI UNIVERSITY, 16, 16, 67, 76,   2005 09 30 , http://ci.nii.ac.jp/naid/110006183304
    Summary:This study describes a prototype TiNi shape memory alloy microgripper which could be used in an assembly process of a micro factory. The microgripper consists of two units, displacement direction-conversion unit and unit for the displacement drive, integrated with same material for miniaturization. Assuming to grip a pin of the about 0.5mm diameter, measuring the characteristics of the alloy on deformation and transformation, designing a microgripper using FEM, trial manufacturing and the characteristic evaluation of the gripper were carried out. As the results, the following were obtained: the outside dimensions of the gripper (11mm×5mm×0.5mm), the gripping stroke (0.2mm), the gripping force (30N), the displacement extension ratio by directions-conversion (1.3), the balance between units on stiffness (1:1).
  • An Estimation of Forces on the Neck of an Occupant of an Automobile at Traffic Accidents based on a Simple FEM model, Memoirs of The School of Biology-Oriented Science and Technology of Kinki University, 14, 77, 84,   2004 10
  • An Estimation of Forces on the Neck of an Occupant of an Automobile at Traffic Accidents based on a Simple FEM Model, Shibue Tadashi, Ohmasa Mitsushi, Memoirs of the School of Biology-Oriented Science and Technology of Kinki University, 14, 77, 84,   2004 09 30 , http://ci.nii.ac.jp/naid/110006423448
    Summary:Whiplash is most common injury caused by traffic accidents. Some ideas such as active head-rest system have been introduced on automobiles to decrease the initiation of whiplash, recently. It is very important to know the initiation mechanisms of whiplash. The forces on the neck seem to be deeply related to the initiation of whiplash. Here, a simple FEM model for the qualitative estimation of forces on the neck of a car driver, is presented based on the nonlinear FEM method. The model represents a human body, a seat and a 3 points seat belt, considering the interaction among them in a vertical 2 dimensional plane. The effects of seat stiffness and seat anchoring stiffness on the amount of generated forces are estimated with the proposed model.
  • 複合材料のSlow Crack Growthに関する研究, UEDA YUKIO, OMASA MITSUFUMI, KASHIMA TOSHINORI, 大阪大学接合科学研究所共同研究報告, 2002, 126, 127,   2003 10 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902286555393132
  • 軽量化ハニカムパネルの座屈強度に及ぼすセル形状の影響, OMASA MITSUSHI, SAKAKIBARA HIROYUKI, UEDA YUKIO, 近畿大学生物理工学部紀要, 12, 49, 57,   2003 09 30 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902201430633578
  • Effect of Cell Shape on Buckling Strength of Lightweighted Honeycomb Sandwich Panels, Ohmasa Mitsushi, Sakakibara Hiroyuki, Ueda Yukio, Memoirs of the School of Biology-Oriented Science and Technology of Kinki University, 12, 12, 49, 57,   2003 09 30 , http://ci.nii.ac.jp/naid/110006423432
    Summary:Honeycomb panels are often used as structural members, since they are lightweight and have high rigidity. The most common shape for the cells of such panels is hexahedral. Additional shapes that may be appropriate for this purpose are the triangle and the square. In the present paper, the effect on buckling strength of the difference in cell shape is evaluated, as in the case in which honeycomb panels are used for the floors of railroad cars. The top surface plate divided by the cell shape may buckle under biaxial compression and the cell plates may buckle under uni-axial compression. In order to evaluate the buckling strength of these plate elements, buckling formulae are prepared based on reference literature, except in the case of the hexagon, the formulae for which are derived using the finite element method. When the thickness of the top surface plate and the height of the panel are maintained constant, the thickness and length of a cell plate must be changed in order for the buckling strength of the top surface and that of the cell plates to be equal. The panel mass is evaluated for each cell shape, and it is found that the panel having the hexagonal cells is the lightest among panels having triangular, square and hexagonal cells.
  • 複合材料のSlow Crack Growthに関する研究, UEDA YUKIO, OMASA KOJI, KASHIMA TOSHINORI, 大阪大学接合科学研究所共同研究報告, 2001, 118,   2002 10 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902113169909505
  • 予測・制御に注目した接合プロセスの力学的解析, UEDA YUKIO, OMASA KOJI, NAKAGAWA YOSHIKAZU, 大阪大学接合科学研究所共同研究報告, 1999, 116, 117,   2000 10 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902128212203368
  • Molecular Magic Rings -Interlock of Molecular Rings via Slippage-, FUJITA Makoto, OGURA Katsuyuki, Journal of the Japan Welding Society, 64, 8, 627, 629,   1995 12 05 , http://ci.nii.ac.jp/naid/110003396362
  • Gaseous Reduction Behavior of Iron Ore Agglomerates and Methods of their Kinetic Analyses., USUI TATEO, SUZUKI YOSHITOMO, HIGAKI KEN, KAWABATA HIROTOSHI, OMASA MITSUFUMI, MORITA ZEN'ICHIRO, 材料とプロセス, 7, 1, 58, 61,   1994 03 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902125144445987
  • Visualization of molten metal flow in a casting die., ONAKA ITSUO, OMASA MITSUFUMI, IKEDA TAKASHI, NAKAMURA TAKAO, ダイカスト, 98, 1, 17,   1993 08 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902140006275107
  • Simulation program for gaseous reduction of non-spherical porous iron oxide., USUI TATEO, OMASA KOJI, MORITA ZEN'ICHIRO, 材料とプロセス, 3, 4, 980,   1990 09 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902079510780563
  • STATISTICAL EVALUATION OF RATE PARAMETERS FOR GASEOUS REDUCTION OF SINGLE SINTER AND INFLUENCE OF PARTICLE SIZE., Tateo Usui, Mitushi Ohmasa, Munekazu Ohmi, Transactions of the Iron and Steel Institute of Japan, 28,   1987 12 01 , http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=18244429868&origin=inward
    Summary:In previous work, single particles of sinter having various sizes were reduced stepwise with CO-CO//2-N//2 gas mixture and the reduction rates were analyzed on the basis of the unreacted core shrinking model for one interface. The size dependency of the resultant rate parameter values were examined. In this work, some additional experiments were done and a new method to obtain rate parameter values was developed. The experimental data were statistically analyzed.
  • Statistical evaluation of rate parameters for gaseous reduction of single sinter and influence of particle size., USUI TATEO, OMASA MITSUSHI, OMI MUNEKAZU, 鉄と鋼, 73, 12, S746,   1987 09 , http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=200902029436024096
  • Improvement of the Strength Characteristics of H-Beams for Welded Frame Structure by Cross Section Shape Control, Steel Construction Engineering, 2, 6, 25,   1995
  • Computer Simulation of Mold Filling (II : Experiments and Comparison), Modeling of Casting and Solidification Processes 1991,   1992
  • Computer Simulation of Mold Filling (I : Algorithm), Modeling of Casting and Solidification Processes 1991,   1992
  • Comparison of Measured and Simulated Water Flow in Low Pressure Die Casting, The Journal of the Japan Foundrymen's Society, 63, 11,   1991
  • Comparison of Measured and Simulated Fluid Flow in Low Pressure Die Casting, Modeling of Casting, Welding, and Advanced Solidification Processes,   1990

Research Grants & Projects

  • Effect of Dynamic Loading on Stress / Strain Properties of Steel Plate
  • Stress Characteristics at the Interface of Bonded Dissimilar Materials Considered Micro Heterogeneity