二次元弾-粘塑性体の衝撃応答解析 : 差分法とFEMコードとの比較

概要

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By our finite-difference method (FDM) based on an exact theory, impact problems of a 2-dimensional elastic-viscoplastic solid under step stress are analyzed. In our FDM code, the inner region is discretized by Lax-Wendroff difference schemes, and the boundary region is discretized by Butler difference schemes. Particle velocity and stress of 2-dimensional solid obtained by our FDM Code are compared with those obtained by finite-element-method (FEM) code DYNA2D. In an elastic problem, the particle velocity and stress obtained by FEM code fluctuate in spite of artificial viscosty more than those obtained by our FDM code. But in elastic-viscoplastic problems, the two codes are in a good agreement.
社団法人日本機械学会の論文
1992-12-25