2003 Fiscal Year Final Research Report Summary
Development of Extendable CAE Foundation Software by Free-Mesh Method
| Project/Area Number |
13355005
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Engineering fundamentals
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| Research Institution | Toyohashi University of Technology |
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Principal Investigator |
KANTO Yasuhiro Toyohashi University of Technology, Department Mechanical Engineering, Associate Professor, 機械システム工学系(工学部), 助教授 (60177764)
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| Co-Investigator(Kenkyū-buntansha) |
HORIE Tomoyoshi Kyushu Institute of Technology, Department Mechanical System Engineering, Professor, 情報工学部, 教授 (40229224)
OKUDA Hiroshi Toyohashi University of Technology, Quantum Engineering System Science, Associate Professor, 大学院・工学系研究科, 助教授 (90224154)
YAGAWA Genki Toyohashi University of Technology, Quantum Engineering System Science, Professor, 大学院・工学系研究科, 教授 (40011100)
IRAHA Shigeo University of Ryukyus, Department Civil Engineering Architecture, Professor, 工学部, 教授 (30045025)
酒井 譲 横浜国立大学, 教育人間科学部, 教授 (90114975)
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| Project Period (FY) |
2001 – 2003
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| Keywords | Free-Mesh Method / Finite-Element Method / Object-Oriented Approach / Three Dimentional Analysis / Structural Analysis / Computer-Aided Engineering / Crack Analysis / Parallel Computing |
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| Research Abstract |
In this research, we developed a CAE foundation software which can generate domain decomposition parallel analysis programs based on the free-mesh method. This software was opened to public as a flee software. The functions of the software are three dimensional structural analysis, and pre-and post processor, including plug-ins to connect with GiD developed at the International Center for Numerical Methods in Engineering, Barcelona, Spain. The research results can be summarized as follows :
-The software was designed by using the Design Patterns to attain easy extendability of functions.
-High precision 4-node tetrahedral element was developed and applied to 3-dimensional flow analysis of fresh concrete. A3-dimensional crack propagation program was also developed and applied to 2 phase material with bone material and mortar.
-A CAE system which can analyze 3-dimensional complicated shaped body seamlessly from CAD models to calculated results was developed and applied to crack propagation problem with mixed mode loading.
-A fast parallelized local mesh generation algorithm was developed by using Quasi-constrained Delaunay triangulation method based on the Gift Wrapping Method. This algorithm enabled to generate numerical models of structures having internal cracks.
-A-3-dimensional free-mesh analysis program of transient heat-transfer problems was developed, as an application to a dynamic problem.
-A 2-dimensional free-mesh analysis program of crack propagation problem was developed and the results were compared and verified with those of finite element analyses.
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