Nonlinear 3-D crack propagation analysis with arbitrary crack shape based on a remeshing technique
| Project/Area Number |
25390157
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Computational science
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
Okada Hiroshi 東京理科大学, 理工学部, 教授 (50281738)
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| Research Collaborator |
KOSHIMA Tetsuya
WAKASHIMA Yuki
UOMOTO Takayuki
SATOH Kohmei
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 計算力学 / 三次元き裂進展解析 / 数値計算手法 / 弾塑性解析 / 大変形 / 非線形有限要素法 / 有限変形解析 / リメッシング / リメッシンング |
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| Outline of Final Research Achievements |
In present research, a new numerical technique “MDP-FEM” for large deformation elastic plastic analysis was proposed. In “remeshing” which is often carried out to avoid excessive element distortionｓ, “data mapping” of strain history dependent physical quantities such as the stresses from old to new finite element analysis model is necessary. This course of investigation proposes the use of MDPs (Mesh-independent Data Points) which are distributed over the problem domain independently from the finite element mesh. With the MDPs, the data mapping is not necessary and arbitrary remeshings can be carried out.
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Report
(4 results)
Research Products
(13 results)
