Development of finite element ductile tearing simulation model considering strain rate effect

Hyun Suk Nam, Ji Soo Kim, Jin Weon Kim, Yun Jae Kim

研究成果: Article査読

1 被引用数 (Scopus)

抄録

This paper proposes ductile failure simulation under high strain rate conditions using finite element (FE) analyses. In order to simulate a cracked component under a high strain rate condition, this paper applies the stressmodified fracture strain model combined with the Johnson/Cook model. The stress-modified fracture strain model determines the incremental damage in terms of stress triaxiality (σm/σe) and fracture strain (ϵf) for a dimple fracture using the tensile test results. To validate the stress-modified fracture strain model under dynamic loading conditions, the parameters are calibrated using the tensile test results under various strain rates and the fracture toughness test results under quasi-static conditions. The calibrated damage model predicts the CT test results under a high strain rate. The simulated results were then compared with the experimental data.

本文言語English
ページ(範囲)167-173
ページ数7
ジャーナルTransactions of the Korean Society of Mechanical Engineers, A
40
2
DOI
出版ステータスPublished - 2016 2 1
外部発表はい

ASJC Scopus subject areas

  • Mechanical Engineering

フィンガープリント 「Development of finite element ductile tearing simulation model considering strain rate effect」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル