Transactions of Materials and Heat Treatment

Title：Theoretical calculation method and its application of arbitrary section springback

Authors： LIU Di-hui1 WU Lei2 LI Guang-yao1 ZHOU Zai-chun1 (1.State Key Laboratory of Advanced Technology for Vehicle Body Design and Manufacturing Hunan University Changsha 410082 China 2.Research Institute of Shanghai Bao Shan Steel Company Shanghai 201900 China

Unit：

KeyWords： springback theory geometry algorithm

ClassificationCode：TG386.41

year,vol(issue):pagenumber：2009,34(6):143-147

Abstract：

A method to analyze springback of arbitrary section was proposed. The section curve was divided into many short sections based on curvature. Every short section was treated as an arc with certain radius. Springback of every arc was then calculated by traditional method. And then fix one point on the section curve,the arc after springback was assembled,thus the springback of the section curve was calculated out. An example to analyze the springback of five section curves of a B-pillar part was provided to verify this method. Negative springback and mechanism of twist were explained by this method.

Funds：

国家杰出青年基金(50625519);; 长江学者和创新团队发展计划资助项目(ITR0718);; 汽车车身先进设计与制造国家重点试验室开放基金(30815008)

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