爆炸与冲击2018，Vol.38Issue(3)：596-602,7.DOI:10.11883/bzycj-2016-0286
Q235B钢动态本构及在LS-DYNA中的应用
Dynamic constitutive model of Q235B steel and its application in LS-DYNA
摘要
Abstract
In this work we conducted a quasi-static tensile test,a high temperature tensile test and a dynamic tensile test on Q235B steel,the most widely used in steel structures in China,using a multi-functional material testing machine and a split Hopkinson tension bar (SHTB) and,based on the test data obtained,fitted three frequently used material models,i.e.the Cowper-Symonds model,the Johnson-Cook model and the Zerilli-Armstrong model,in LS-DYNA.We then verified their validity by conducting Taylor impact tests.The results showed that Q235B steel was temperature and strain-rate sensitive,that the Cowper-Symonds model was applicable in low velocity impact simulations,that the Johnson-Cook model was suitable for simulations with a wider range of strain-rates,and that the Zerilli-Armstrong model was not recommendable for low velocity impact simulation.关键词
动态本构模型/Q235B钢/应变率效应/Taylor杆Key words
dynamic constitutive model/Q235B steel/strain-rate effect/Taylor bar分类
数理科学引用本文复制引用
支旭东,张荣,林莉,范峰..Q235B钢动态本构及在LS-DYNA中的应用[J].爆炸与冲击,2018,38(3):596-602,7.基金项目
国家自然基金面上项目(51478144) （51478144）
国家杰出青年科学基金项目(51525802) （51525802）
中国地震局创新团队发展计划项目 （）
