The finite element analysis of ductile damage during hot stamping of 22MnB5 steel

被引：45

作者：

Hu, Ping ^{[1
]}

Shi, Dongyong ^{[1
]}

Ying, Liang ^{[1
]}

Shen, Guozhe ^{[1
]}

Liu, Wenquan ^{[1
]}

机构：

[1] Dalian Univ Technol, Fac Vehicle Engn & Mech, State Key Lab Struct Anal Ind Equipment, Dalian 116023, Peoples R China

来源：

MATERIALS & DESIGN | 2015年 / 69卷

基金：

中国国家自然科学基金;

关键词：

Hot stamping; Ductile damage; Identification; Formability; Numerical simulation; FORMABILITY; MECHANICS; MODEL;

D O I：

10.1016/j.matdes.2014.12.044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study deals with the finite element investigation of hot stamping of high strength steel. The main objective is to predict when and where the crack can appear in the work-piece during the hot stamping operation. A set of thermo-elastic-plastic constitutive equations coupled with material damage is presented in detail based on continuum damage mechanics. The damage parameters involved in the constitutive equations were determined from uniaxial tensile experimental data of 22MnB5 steel at a temperature range of 650-800 degrees C and strain rates of 0.01, 0.1, 1.0 s(-1). Using the calibrated constitutive equations, a finite element program was developed based on dynamic explicit algorithm and applied to simulate the deformation process and ductile damage of 22MnB5 under hot stamping conditions. The capability of the program as a predictive tool has been evaluated by comparing experimental and calculated results of the hot stamping process of an automotive B-pillar. And the effects of blank holding force and friction on formability, damage evolution and punch force were analyzed. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：141 / 152

页数：12

共 26 条

[1]

[Anonymous], INT C NUM METH IND F

[2]

[Anonymous], 2007, INT DEEP DRAW RES GR

[3]

[Anonymous], J MAT PROCESS TECHNO

[4]

[Anonymous], 7 EUR LS DYN C SALZB