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1999 Fiscal Year Final Research Report Summary

Research of Virtual Design System for Spatial Structures by Meshfree Method

Research Project

Project/Area Number 10650097
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionKeio University

Principal Investigator

NOGUCHI Hirohisa  Keio University, Faculty of Science and Engineering, Associate Professor, 理工学部, 助教授 (70218303)

Co-Investigator(Kenkyū-buntansha) OGI Tetsuro  Mitsubishi Research Institute, Research Center for System Solution, Senior Staff Researcher, システムソリューション研究センター, 主任研究員
Project Period (FY) 1998 – 1999
KeywordsMembrane Structure / Meshfree Method / Element Free Galerkin / Geometrically Nonlinear / Geodesic Line / Virtual Realty
Research Abstract

In order to reduce cost and period of constructing large-scale membrane structures, an accurate and efficient system for designing membrane structures is anticipated. The reason why the element free system was adopted rather than the conventional finite element system are as follows. It requires no generating meshes of complicated structures, accurate and continuous stress and strain state is obtained by using the moving least squares interpolation. Also the geodesic lines on the surface of membrane for the cutting lines can easily determined due to the C 1 continuity condition of displacement field, which are hardly defined in the finite element meshes.
In this study, adding to the above characteristics, the analysis method for sliding cables on membrane is also proposed. Cables to reinforce their strength often tense large membrane structures. In order to analyze cable-reinforced membrane structures, folding membrane at cable, which yields discontinuity of slope, has to be taken into account. Furthermore, these cables are often attached in a way that permits themselves to slide over the surface on the membrane so that the cables could find equilibrium form under the applied gravity load, wind load and so on. In the conventional finite element method, discontinuity of slope can exists only at the boundary of elements, so re-meshing or special development of folding element is necessary to model this moving discontinuity.
In the element free method, it is not necessary to subdivide analysis model into elements, therefore, folding can be modeled at arbitrary points on membrane surface and it can move freely on the surface by redefining the nodal arrangement.
Finally, in this study, the design and analysis system using mesh free method based on the moving least squares interpolation for membrane structures is proposed. Several numerical examples have been demonstrated to show the validity of the proposed method.

  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] 野口裕久 他: "メッシュレスアプローチによる任意曲面上の測地線探索"計算工学講演会論文集. Vol.4, No.1. 59-60 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 野口裕久 他: "Enhanced EFGMに基づくケーブルによる折れ曲がりを考慮した膜構造解析"日本機械学会1999年度年次大会講演論文集(II). 71-72 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Noguchi, H. et al: "Element Free Analyses of Membrane and Cable structure with Discontinous Slopes"USNCCM99. 307-308 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Noguchi H. et al: "The analyses of membrane structure with cable reinforcement by mesh free method"Enropian Conference on Compositional Mechanics 1999. 850-851 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 野口裕久 他: "Enhanced EFGMによるケーブルの摩擦滑りを考慮した膜構造解析"第12回計算力学講演会講演論文集. No.99-5. 729-730 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Noguchi, H. et al: "The analyses of membrane structure with cable reinforcement by element free method"Computational mechanics for the Next Millenium. Vol.1. 1003-1008 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 川島徹也、矢橋晋太郎、野口裕久、横堀和夫: "移動最小自乗法による任意曲面上のメッシュレス測地線探索"膜構造研究論文集'99. 13. 1-6 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Noguchi, H. Miyamura, T. and Kawashima T.: "Element Free Analysis of Shell and Spatial Structures"Int. J. Numerical Methods. In Engineering. 47. 1215-1240 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Noguchi, H., Miyamura, T. and Kawashima, T.: "Element Free Analysis of Shell and Spatial Structures"Int. J. Numerical Methods. In Engineering. Vol.47, No.6. 1215-1240 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Noguchi, H., Kawashima, T., Miyamura, T.: "Role of Mesh Free Method for Analysis of Spatial Membrane Structures"MODELING AND SIMULATION BASED ENGINEERING. Vol.1. 101-106 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Noguchi, H., Kawashima, T.: "Element Free Analysis of Membrane and Cable Structurs with Discontinuous Slopes"USNCCM 99. 307-308 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Noguchi, H., Kawashima, T.: "The analysis of membrane structures with cable reinforcement by mesh free method"European Conference on Compositional Mechanics 1999. 850-851 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kawashima, T., Noguchi, H.: "The ananlysis of membrane structures with cable reinforcement by element free method"Computational Mechanics for the Next Millennium. Vol.1. 1003-1008 (1999)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2001-10-23  

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