Fracture Prediction for an Advanced High-Strength Steel Sheet Using the Fully Coupled Elastoplastic Damage Model with Stress-State Dependence

被引：0
作者：
Kai Zhang
Mingchuan Wang
Weijie Liu
Jianlin Liu
机构：
[1] China University of Petroleum (East China),College of Pipeline and Civil Engineering
[2] Nanjing University of Science and Technology,Sino
[3] Institute of Applied Physics and Computational Mathematics,French Engineer School
来源：
Acta Mechanica Solida Sinica | 2021年 / 34卷
关键词：
Ductile damage; Full coupling; Stress state; Numerical simulation; Edge fracture;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this study, the numerical simulations of sheet metal forming processes are performed based on a fully coupled elastoplastic damage model. The effects of stress triaxiality and Lode angle are introduced into the damage evolution law to capture the loading-path-dependent failure. The proposed constitutive model is implemented into the finite element (FE) code ABAQUS/Explicit via the user-defined subroutine (VUMAT). Next, the identification procedure for DP780 based on the hybrid experimental–numerical method is presented in detail. The numerical results of simple tests are compared with the experiments, and obvious improvement is observed for the proposed model under various loading paths. Finally, the model is applied to predict the edge fracture during sheet blanking process. The predicted global load–displacement responses and crack paths have a good agreement with the experimental results, indicating that the model holds great potentials in simulation of metal forming processes.
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页码：263 / 273
页数：10
相关论文
共 44 条
  • [1] Bai Y(2008)A new model of metal plasticity and fracture with pressure and Lode dependence Int J Plast 24 1071-1096
  • [2] Wierzbicki T(2008)Ductile fracture initiation and propagation modeling using damage plasticity theory Eng Fract Mech 75 3276-3293
  • [3] Xue L(2013)Prediction of ductile fracture for advanced high strength steel with a new criterion: experiments and simulation J Mater Process Technol 213 1284-1302
  • [4] Wierzbicki T(2020)Anisotropic fracture modeling of sheet metals: from in-plane to out-of-plane Int J Solids Struct 182–183 112-140
  • [5] Lou Y(1985)A continuous damage mechanics model for ductile fracture Trans ASME J Eng Mater Technol 107 83-89
  • [6] Huh H(1977)Continuum theory of ductile rupture by void nucleation and growth: part I—yield criteria and flow rules for porous ductile media J Eng Mater Technol 99 2-15
  • [7] Gu B(1984)An analysis of ductile rupture in notched bars J Mech Phys Solids 32 461-490
  • [8] He J(2013)Application and theoretical analysis of C/SiC composites based on continuum damage mechanics Acta Mech Solida Sin 26 491-499
  • [9] Li S(2016)Ductile damage prediction in sheet and bulk metal forming Comp Ren Méca 344 296-318
  • [10] Lin Z(2014)A Lode-dependent enhanced Lemaitre model for ductile fracture prediction at low stress triaxiality Eng Fract Mech 124–125 80-96
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