Nonlinear 3-D crack propagation analysis with arbitrary crack shape based on a remeshing technique

2015 Fiscal Year Final Research Report

• Project/Area Number: 25390157
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Computational science
• Research Institution: Tokyo University of Science
• Principal Investigator: Okada Hiroshi 東京理科大学, 理工学部, 教授 (50281738)
• Research Collaborator: KOSHIMA Tetsuya ; WAKASHIMA Yuki ; UOMOTO Takayuki ; SATOH Kohmei
• Project Period (FY): 2013-04-01 – 2016-03-31
• 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

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.

Free Research Field

計算力学