Transactions of Materials and Heat Treatment

Title：Numerical simulation on chain-die forming of hat-shaped part for advanced high strength steel

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ClassificationCode：TG335

year,vol(issue):pagenumber：2020,45(7):103-106

Abstract：

The ABAQUS/Standard finite element model of chain-die forming for hat-shaped part of QP1180 advanced high strength steel was established, and its forming and springback processes were simulated. Then, the influences of different parameters of chain-die forming for hat-shaped part with constant section of advanced high strength steel, including the clearance between upper and lower dies, normal contact modes, friction coefficient and definition modes of material plasticity, on the maximum principal strain at the outermost layer element for rounded corners of baseplate and the springback shape of the end section for hat-shaped part were investigated. The results show that the clearance between upper and lower dies and friction coefficient have a significant effect on the maximum principal strain at the outermost layer element for rounded corners of baseplate, and the maximum principal strain of this region increases with the decreasing of clearance between upper and lower dies and the increasing of friction coefficient. Furthermore, the clearance between upper and lower dies, the definition modes of material plasticity and the friction coefficient have significant influence on the springback shape of the end section for hat-shaped part.

Funds：

国家自然科学基金资助项目（U1860110）

梁振业(1993-)，男，博士研究生 E-mail：liangzhenye@sjtu.edu.cn 通讯作者：李大永(1973-)，男，博士，教授 E-mail：dyli@sjtu.edu.cn

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