机械科学与技术2017，Vol.36Issue(6)：955-959,5.DOI:10.13433/j.cnki.1003-8728.2017.0622
先进高强度双相钢车身板的韧性断裂准则分析
Analysis of Ductile Fracture Criteria of Advanced High Strength Dual-phase Steels
摘要
Abstract
In stamping,the unique fracture phenomenon of advanced high-strength steel appears due to the competition of shear and necking,which affects the forming process of car plate design,prevents the dimensional accuracy and further improvement of forming quality of dual phase steel parts.The modified Mohr coulomb criterion can predict the ductile fracture of dual phase steel,but it is not easy to determine its parameters.A ductile fracture criterion is put forward which is both easy to use in engineering and unify the phenomenon of tensile and shear,and the vectorized user material subroutine (VUMAT) of ABAQUS is written based on Hill'48 anisotropic yield criterion,and the experiment of DP780 stretch bending forming is simulated by comparing the two ductile fracture criterions,finding that new standards can be used for predicting the stamping fracture of dual phase steel,and the errors meet engineering requirements.关键词
先进高强度双相钢/冲压/韧性断裂准则/VUMATKey words
advanced high strength dual-phase steels/stamping/ductile failure criterion/VUMAT分类
交通工程引用本文复制引用
赵连星,李迪,孙彩凤,梁云霞,郁敏,徐家川..先进高强度双相钢车身板的韧性断裂准则分析[J].机械科学与技术,2017,36(6):955-959,5.基金项目
上海市复杂薄板结构数字化制造重点实验室开放基金项目(2011004)资助 （2011004）
