Transactions of Materials and Heat Treatment

Title：Calculation method of structural strength for automobile panel drawing die

Authors： Gong Zhihui Liu Lei Zhong Jian Shi Jianbing

Unit： Hunan University Guangdong Guangzhou Automobile Group Motor Co. Ltd.

KeyWords： automobile panel stamping drawing die structural strength

ClassificationCode：TG386.32

year,vol(issue):pagenumber：2016,41(10):118-121

Abstract：

Structural strength calculation of automobile panel dies is an important basis for the lightweight design of die structure. Based on the analysis of the existing methods, a new method to calculate the strength of the die was put forward, which was divided into two parts including rigid body stamping and flexible body stamping to calculate. However, rigid stamping was applied in most of punching strokes to improve calculation efficiency, and in the end the die was set with the flexible body stamping to accomplish the final stamping process. Therefore, the stamping process of a car inner door panel was simulated, and the data of die structure strength were acquired. Furthermore, the actual deformation of the die was measured by dial indicators and camera, and the results were compared with the simulation. The results show that the calculated results are consistent with the actual results, and the effectiveness of method is verified. Therefore, the calculation efficiency can be improved effectively and the complex mapping calculation is avoided to fit in engineering practice.

Funds：

国家科技重大专项(2014ZX04015051)；国家自然科学基金资助项目(51475155)

作者简介：龚志辉（1974-），男，博士，副教授 E-mail：gzhaa@163.com

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