Transactions of Materials and Heat Treatment

Title：Study on stretch-bending springback experiment and simulation of high strength steel

Authors： Zhan Hua Yu Changwang Zhang Jun Wan Zheng Liu Yonggang Li Dongsheng Li Xiaoqiang

Unit： Maanshan Iron and Steel Co. Ltd. Beihang University

KeyWords： stretch-bending springback blank holder force numerical simulation

ClassificationCode：TG386

year,vol(issue):pagenumber：2016,41(6):21-25

Abstract：

?Strength-bending experiments of two kinds of high strength cold rolled dual-phase steel DP980 and DP780 were conducted based on the forming springback testing machine platform, and the strength-bending springback data of the two materials under different blank holder forces were obtained. Furthermore, the forming and springback properties were analyzed and discussed. At the same time, the simulation model of stretch-bending test was established by the finite element software ABAQUS. Corresponding numerical simulation of forming and springback process was conducted according to experimental parameters. At last, the simulation results were compared with the experimental results, and the springback deviation rates of simulation results and experiment results were calculated. The results show that the springback of stretch-bending reduces gradually with the increase of blank holder force, and the maximum springback deviation rate between simulation and experiment reaches 11.2%，which indicates that the simulation results are in good agreement with the experimental results.

Funds：

基金项目:国家自然科学基金资助项目（50905008）

作者简介：詹华（1980-），男，硕士，工程师 E-mail：40588205@qq.com 通讯作者：李小强（1979-），男，博士，副教授 E-mail：lixiaoqiang@buaa.edu.cn

Reference：

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