Transactions of Materials and Heat Treatment

Title：Springback analysis and compensation convergence research on formed parts of high strength steel plate based on AutoForm

Authors： Kong Min Hu Wei Mo Jianhua Yang Weihong Liu Huihui Zhu Yueting

Unit： Wenhua College Wuhan Santeli Mould Technology Co. Ltd.

KeyWords： high strength steel convergence springback compensation compensation coefficient smoothing coefficient

ClassificationCode：TG386

year,vol(issue):pagenumber：2019,44(9):172-179

Abstract：

Based on software AutoForm, taking the outside plate of left front longitudinal beam as the carrier, aiming at the characteristics of few geometric features, large curvature radius, complex twist springback and warpage springback instability produced after forming, the influence law of compensation coefficient and smoothing coefficient on the convergence of springback compensation were studied by the process analysis, forming springback and compensation simulation of the parts. Then, the compensation simulation was conducted by the optimized compensation coefficient and smoothing coefficient, and the stamping experiment was carried out based on the compensated die surface. The results show that the convergent optimal die surface is obtained by two iterations, and the dimensional accuracy of parts is qualified and the springback of parts is completely controlled. Thus, the method proposed is reliable for obtaining the convergent optimal die surface quickly and efficiently in the process of springback compensation numerical simulation, which can guide the production of other high strength steel parts with complex springback.

Funds：

2018年度湖北省教育厅科学研究计划（B2018333）

孔敏（1991-），女，硕士，助教 E-mail：13207131768@163.com 通讯作者：胡伟（1990-），男，学士 E-mail：782802298@qq.com

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