大変形弾塑性問題の並列パラメトリック解析に向けた検討

抄録

Numerical solutions of nonlinear finite element analysis of large-deformation elastic-plastic problems are often compared with experimental solutions. However, they sometimes do not match. Therefore, the purpose of this study is developing a method for analyzing the reason why numerical and experimental solution do not match. We developed a parallel parametric analysis method to realize the purpose. In this study, we performed a parametric analysis for the crack problem of the compact tension (CT) specimen. We selected the crack length, the yield stress and equivalent plastic strain curve and the number of incremental steps as parameters for the parametric analysis. The result of the analysis showed that the load-line displacement is changed by the crack length and the yield stress and equivalent plastic strain curve. And we investigated the computational time and the speedup. As a result of the investigation, we found the proposed method can reduce the computational time.