Crash analysis of thin-walled structures with an elasto-plastic explicit finite element method

被引：1

作者：

Kang, WJ ^{[1
]}

Huh, H ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Mech Engn, Yusong Gu, Taejon 305701, South Korea

来源：

ADVANCES IN ENGINEERING PLASTICITY, PTS 1-2 | 2000年 / 177-1卷

关键词：

finite element method; Hopkinson bar; strain rate effect; thin-walled structures;

D O I：

10.4028/www.scientific.net/KEM.177-180.201

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

To evaluate the crash-worthiness of a car, the dynamic response of auto-body components has to be correctly simulated for various loading conditions. Simulation of thin-walled structures has been carried out by an elasto-plastic explicit finite element method with shell elements. The present algorithm adopts the plastic-predictor elastic-corrector (PPEC) scheme in stress integration in order to keep track of the stress-strain relation for the rate-dependent model accurately. Experimental results from both static and dynamic tests with the tension split Hopkinson bar apparatus are interpolated to construct the Johnson-Cook and a modified Johnson-Cook equation as a constitutive relation, that should be applied to simulation of the dynamic behavior of auto-body structures. Numerical simulations show remarkable difference in the reaction force and impact energy absorption between the static model and the dynamic model.

引用

页码：201 / 212

页数：12

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