Detailed Information

Research Field/Keywords for Research Field

• Structural Engineering

Education

• 1979/03, Graduated
• 1981/03, Master Course, Completed
• 1984/03, Doctor Course, Accomplished credits for doctoral program

Employment Experience

• 1984/04 - 1985/09 Research Associate
• 1985/10 - 1989/03 Lecturer, Faculty of Science and Engineering, Saga University
• 1989/04 - 1999/12 Associate Professor, Faculty of Science and Engineering, Saga University
• 2000/01 - 2010/03 Professor, Faculty of Science and Engineering, Saga University
• 2008/01 -  *  Professor, Career Center, Saga University
• 2010/04 -  *  Professor, Civil Engineering and Architecture, Graduate School of Science and Engineering, Saga University

Field of Specialization

• Structural engineering/Earthquake engineering/Maintenance management engineering, Computational science

Research Topics and Results

• Mechanically rational forms of curved surface structures shaped from the uniform strain elements 2018/05
• An accurate algorithm of numerical integration for computing seismic responses of inelastic structures 2018/05
• An orthotropic membrane model for the large deformation analysis and snapping phenomena of the dome inflated 2016/00
• Large deformation analysis of flexible membrane structures and the experiment 2015/10
• 面外曲げ抵抗を考慮した膜構造の大変形解析 2013/09
• An orthotropic membrane model replaced with line-members and the large deformation analysis 2011/10
• Study on large displacement responses of membrane structures replaced with line members in tensile field 2011/03
• A method of replacing membrane structures by flexible cable elements and the large deformation analysis 2010/11
• 非抗圧膜モデルを用いた殻構造の折り畳み解析に関する研究 2010/09
• Large deformation analysis of membrane structures considering small compressive stiffness 2010/09
• 線材置換による非抗圧膜構造の効率的な大変形解析手法に関する研究 2010/03
• 筒状膜構造の折り畳み解析に関する研究 2010/03
• Study on multiple nonlinear analysis of frame structures by using spring-rigid-bar-elements 2009/12
• Large deformation analysis of compression-free membrane structures replaced by elastic cable units 2009/10
• 線材ユニット置換による非抗圧膜構造の張力場理論と大変位解析 2009/09
• Large displacement analysis of compression-free membrane structures modeled by elastic-catenary cables 2009/03
• 多面体釣合解の石鹸膜近似特性に関する研究 2008/03
• 剛棒・バネ一体型要素を用いた2次元複合非線形骨組構造解析 2006/12
• Static and aerodynamic characteristics of a hybrid stress-ribbon pedestrian bridge during construction 2004/12
• 応答スペクトルを用いた単一任意形状桁の地震時最大衝突速度予測 2004/03

Original Articles

• Mechanically rational forms of curved surface structures shaped from the uniform strain elements;　2018/05
  ANNOUNCEMENT INFO.;　International Journal of Integrated Engineering, Special Issue 2018: Civil & Environmental Engineering, Vol. 10 No.2 (2018) p. 87-92, Vol. 10, No. 2, p. 87-92
  AUTHOR;　K.Tanaka, K.Ijima, H.Obiya, Z.M.Nizam
  
• An accurate algorithm of numerical integration for computing seismic responses of inelastic structures;　2018/05
  ANNOUNCEMENT INFO.;　International Journal of Integrated Engineering, Special Issue 2018: Civil &Environmental Engineering, Vol. 10 No. 2 (2018) p. 82-86, Vol. 10, No. 2, p. 82-86
  AUTHOR;　M.Miyahara, K.Ijima, H.Obiya, Z.M.Nizam
  
• Potential function of element measurement for form-finding of wide sense tensegrity;　2018/05
  ANNOUNCEMENT INFO.;　IOP Conf. Series: Earth and Environmental Science 140 (2018) 012132 doi:10.1088/1755-1315/140/1/012132
  AUTHOR;　C. K. Soe, H.Obiya, D. Koga, Z.M.Nizam, K.Ijima
  
• Mesh optimization based on a process of geometrical nonlinear analysis;　2018/05
  ANNOUNCEMENT INFO.;　IOP Conf. Series: Earth and Environmental Science 140 (2018) 012131
  AUTHOR;　T. Kawakami, H. Obiya, C. K. Soe, Z. M. Nizam, K. Ijima
  
• A numerical case study on contact analysis with large displacement;　2016/00
  ANNOUNCEMENT INFO.;　MATEC Web of Conference 47, 02017 (2016) DOI: 10.1051/matecconf/20164702017
  AUTHOR;　A.Yamasaki, H.Obiya, K.Ijima, Z.M.Nizam
  
• An orthotropic membrane model for the large deformation analysis and snapping phenomena of the dome inflated;　2016/00
  ANNOUNCEMENT INFO.;　MATEC Web of Conference 47, 02016 (2016) DOI: 10.1051/matecconf/20164702016
  AUTHOR;　S.Yamada, K.Ijima, H.Obiya, Z.M.Nizam
  
• Large deformation analysis of flexible membrane structures and the experiment;　2015/10
  ANNOUNCEMENT INFO.;　VII International Conference on Textile Composites and Inflatable Structures, STRUCTURAL MEMBRANE 2015
  AUTHOR;　M.Tomioka, K.Ijima, H.Obiya
  
• A comparison for the simulation of frictionless contact problem with large displacement;　2015/07
  ANNOUNCEMENT INFO.;　Applied Mechanics and Materials ISSN: 1662-7482, Vols. 773-774, pp 257-261 DOI: 10.4028/www.scientic.net/AMM. 773-774.257
  AUTHOR;　Z.M.Nizam, H.Obiya, K.Ijima, A.T.S.Azhar
  
• Effect of Shear Deformation on Convergability of Simple Contact Analysis with Large Displacement;　2013/11
  ANNOUNCEMENT INFO.;　APCOM & ISCM 11-14th December, 2013, Singapore, CDROM
  AUTHOR;　Z.M.Nizam, H.Obiya, K.Ijima, R.Tokubuchi and K.Ishibashi
  
• テンセグリティ仮想剛性構造の釣合解特性に関する数値実験的研究;　2012/09
  ANNOUNCEMENT INFO.;　, 68, 2, I45-I56
  AUTHOR;　
  
• Path Finding of Virtual Structure Composed Of Axial Force Line Elements;　2012/05
  ANNOUNCEMENT INFO.;　Proceedings of IASS-APCS
  AUTHOR;　Z. M. Nizam, A. Matsuo, H. Obiya and K. Ijima
  
• An orthotropic membrane model replaced with line-members and the large deformation analysis;　2011/10
  ANNOUNCEMENT INFO.;　Int. Conf. on Textile Composites and Inflatable Strucutre, Structural Membrane 2011
  AUTHOR;　KATUSHI IJIMA, HIROYUKI OBIYA, KOTA KIDO
  
• Shape analysis for inflatable structures with water pressure by the simultaneous control;　2011/10
  ANNOUNCEMENT INFO.;　Int. Conf. on Textile Compsites and Inflatable Structures, Structural Membrane 2011
  AUTHOR;　MUHAMMAD NIZAM BIN ZAKARIA, HIROYUKI OBIYA, KATSUSHI IJIMA
  
• Form-finding of extensive tensegrity using truss elements and axial force lines;　2011/10
  ANNOUNCEMENT INFO.;　Int. Conf. on Textie Compsites and Inflatable Structures, Structural Membrane 2011
  AUTHOR;　AYA MATSUO, HIROYUKI OBIYA, KATSUSHI IJIMA, MUHAMMAD NIZAM BIN ZAKARIA
  
• Study on large displacement responses of membrane structures replaced with line members in tensile field;　2011/03
  ANNOUNCEMENT INFO.;　, 57A, 41-52
  AUTHOR;　Katsuhi Ijima, Hiroyuki Obiya, Noriaki Kawasaki
  
• 形態解析と釣合模型制作による構造力学感覚教育の試み;　2011/00
  ANNOUNCEMENT INFO.;　, 67, 1, 22-31
  AUTHOR;　
  
• A method of replacing membrane structures by flexible cable elements and the large deformation analysis;　2010/11
  ANNOUNCEMENT INFO.;　Proceeding of the International Association for Shell and Spatial Structres (IASS) Symposium 2010, Shanghai, 2219-2228
  AUTHOR;　Kota KIDO, Katsushi IJIMA, Hiroyuki OBIYA, Noriaki KAWASAKI
  
• Shape analyses for isotonic surfaces with soap film elements and axial lines;　2010/11
  ANNOUNCEMENT INFO.;　Proceedings of the International Association for Shell and Spatial Structures (IASS) Symposium 2010, Shanghai, 1210-1221
  AUTHOR;　Hiroyuki OBIYA, Yusheng WU, Katsushi IJIMA
  
• Form-finding of tensegrity structures with rigid bodies and axial line elements;　2010/08
  ANNOUNCEMENT INFO.;　, 13, 47-55
  AUTHOR;　Hiroyuki Obiya, Katsushi Ijima, Noriaki Kawasaki, Tomoko Matsunaga, Aya Matsuo
  
• Large deformation analysis of compression-free membrane structures replaced by elastic cable units;　2009/10
  ANNOUNCEMENT INFO.;　International conference on Textile Composites and Inflatable Structures, STRUCTURAL MEMBRANE 2009
  AUTHOR;　K. Ijima, H. Obiya
  
• Large displacement analysis of compression-free membrane structures modeled by elastic-catenary cables;　2009/03
  ANNOUNCEMENT INFO.;　Journal of Structural Engineering, 55A, 11-22
  AUTHOR;　Katsushi Ijima, Hiroyuki Obiya, Noriaki Kawasaki
  
• 多面体釣合解の石鹸膜近似特性に関する研究;　2008/03
  ANNOUNCEMENT INFO.;　, 21, 43-50
  AUTHOR;　西村裕次^M、帯屋洋之、井嶋克志、川崎徳明、新村徹平^B
  
• A Study on Multi-bifurcation Equilibrium Paths using the Tangent Stiffness Method;　2007
  ANNOUNCEMENT INFO.;　APCOM'07-EPMESC XI
  AUTHOR;　K. Abe, H. Obiya, K. Ijima
  
• Large Displacement Analysis of Sagged Nets in Three-Dimensional Space;　2007
  ANNOUNCEMENT INFO.;　APCOM'07-EPMESC XI
  AUTHOR;　T. Sato, K. Ijima, H. Obiya, N. Kawasaki
  
• 面内方向軸力線要素を用いた滑らかな石鹸膜形状の決定手法について;　2007
  ANNOUNCEMENT INFO.;　, 10, 27-36
  AUTHOR;　
  
• A composite element of springs and rigid bars and its application to nonlinear frame analysis;　2007
  ANNOUNCEMENT INFO.;　APCOM'07-EPMESC XI
  AUTHOR;　K. Ijima, H. Obiya, M. Kishimura, Y. Ostrikov
  
• 膜張力平均化サイマルコントロール法による石鹸膜形態解析;　2006
  ANNOUNCEMENT INFO.;　, 9, 33-40
  AUTHOR;　
  
• ハイブリッド吊り床版道路橋桁仮設系の静力学特性に関する基礎的研究;　2006
  ANNOUNCEMENT INFO.;　, 22, 51-59
  AUTHOR;　
  
• 軸力線要素置換による任意形状最小曲面の形態解析;　2005
  ANNOUNCEMENT INFO.;　, 19, 49-54
  AUTHOR;　
  
• 接線剛性法の求解特性を用いた多分岐釣合系の追跡;　2005
  ANNOUNCEMENT INFO.;　, 21, 57-64
  AUTHOR;　
  
• 形状依存追従力を受ける膜構造物のための等張力曲面形状に関する研究;　2005
  ANNOUNCEMENT INFO.;　, 51A, 79-86
  AUTHOR;　
  
• Static and aerodynamic characteristics of a hybrid stress-ribbon pedestrian bridge during construction;　2004/12
  ANNOUNCEMENT INFO.;　Journal of Structures and Materials in Civil Engineering, 20, 41-48
  AUTHOR;　Takehiko Harada, Takahisa Tanaka, Takeshi Yoshimura, Katsushi Ijima, Takuma Beppu
  
• 応答スペクトルを用いた単一任意形状桁の地震時最大衝突速度予測;　2004/03
  ANNOUNCEMENT INFO.;　, 150A, 457-466
  AUTHOR;　
  
• Form and Structural Analysis of High-Rise Pneumatic Structures;　2004
  ANNOUNCEMENT INFO.;　Proc. of the mt. Conf. on Computational & Experimental Engineering and Sciences (ICCEES 04), in CD-ROM,
  AUTHOR;　H.　Obiya, 　K.　Ijima,　N.　Kawasaki, 　S.　Iguchi
  

Material, Commentary, Editorials, Research Report, A Comprehensive Journal Articles

• Study on multiple nonlinear analysis of frame structures by using spring-rigid-bar-elements;　2009/12
  ANNOUNCEMENT INFO.;　, 38, 2, 19-25
  AUTHOR;　Sho Hujikawa, Katsushi Ijima, Hiroyuki Obiya, Nriaki Kawasaki
  
• 剛棒・バネ一体型要素を用いた2次元複合非線形骨組構造解析;　2006/12
  ANNOUNCEMENT INFO.;　, 35, 2, 25-30
  AUTHOR;　
  
• ハイブリッド吊床版道路橋架設系の静力学特性;　2005
  ANNOUNCEMENT INFO.;　, 42, 243-250
  AUTHOR;　
  

General Lectures

• 懸垂膜吊り上げ実験による膜構造大変形解析手法の検討;　2014/09
  ANNOUNCEMENT INFO.;　, 69, 235-236
  AUTHOR;　M. Tomioka, S. Tabaru, K. Ijima, H. Obiya, N. Kawasaki
  
• 等張力膜構造形状を目的とした等ひずみ曲面解析手法について;　2013/09
  ANNOUNCEMENT INFO.;　, 913-914
  AUTHOR;　
  
• 面外曲げ抵抗を考慮した膜構造の大変形解析;　2013/09
  ANNOUNCEMENT INFO.;　, 879-880
  AUTHOR;　
  
• 線材置換による異方性膜構造の大変形解析に関する研究;　2011/09
  ANNOUNCEMENT INFO.;　, 1261-1262
  AUTHOR;　
  
• 非抗圧膜モデルを用いた殻構造の折り畳み解析に関する研究;　2010/09
  ANNOUNCEMENT INFO.;　, 95-96
  AUTHOR;　
  
• Large deformation analysis of membrane structures considering small compressive stiffness;　2010/09
  ANNOUNCEMENT INFO.;　, 719-720
  AUTHOR;　Shi XINGZHI, Katsushi IJIMA, Hiroyuki OBIYA
  
• 線材置換による非抗圧膜構造の効率的な大変形解析手法に関する研究;　2010/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 筒状膜構造の折り畳み解析に関する研究;　2010/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 線材ユニット置換による非抗圧膜構造の張力場理論と大変位解析;　2009/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• ブレース付フレームの座屈変形履歴特性に関する研究;　2008/09
  ANNOUNCEMENT INFO.;　, 743-744
  AUTHOR;　
  
• ３次元弾性カテナリーケーブル理論と非抗圧膜近似モデルへの応用について;　2008/09
  ANNOUNCEMENT INFO.;　, 1123-1124
  AUTHOR;　
  
• 材料特性に応じた合理的非弾性要素モデルによる骨組構造解析;　2008/09
  ANNOUNCEMENT INFO.;　, 1101-1102
  AUTHOR;　
  
• 4点バネ剛棒要素によるRC柱の複合非線形解析;　2008/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• バネ・剛棒一体型要素による２次元複合非線形骨組構造解析;　2006/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 任意境界形状最小曲面を求めるための要素置換手法に関する研究;　2006/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 橋梁桁衝突振動応答の不確定性に関する実験的研究;　2005/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 接線剛性マトリクスの固有値に基づく分岐釣合経路追跡;　2005/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 座屈後経路における超大変形解の特性に関する数値実験的研究;　2004/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;