Isogeometric 解析における破壊問題に関する研究 ― 自動車衝突解析における延性き裂進展の再現―

古橋 輝一; 長坂 圭; 増田 出光; 大鹿 穂積; 星野 瑞希; 横山 優太; 杉山 裕文; 岡澤 重信

doi:10.11351/jsaeronbun.54.1185

Paper

Isogeometric Analysis of Fracture Problem

- Reproduction of Ductile Crack Propagation for Automobile Crash Analysis -

Ki-ichi Furuhashi, Kei Nagasaka, Idemitsu Masuda, Hozumi Oshika, Mizuki Hoshino, Yuta Yokoyama, Hirofumi Sugiyama, Shigenobu Okazawa

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Keywords: Safety, Crash safety, Computer aided engineering, Isogeometric analysis

JOURNAL FREE ACCESS

2023 Volume 54 Issue 6 Pages 1185-1190

DOI https://doi.org/10.11351/jsaeronbun.54.1185

Details

Abstract

Effective computational procedures to treat ductile fracture problem in Isogeometric analysis (IGA) are proposed. In this study, a technique for reproduce crack propagation with trimming curves by adding control points in IGA is described. The reproducibility of stress concentration, various crack propagations, and computational efficiency of the proposed method are verified using tensile example calculations.

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