Transactions of Materials and Heat Treatment

Title：An equivalent drawbead model considering Bauschinger effect

Authors： Han Chao Dong Xianghuai

Unit： Shanghai Jiao Tong University

KeyWords： Bauschinger effect hardening model cyclic loading equivalent drawbead model drawbead restraining force

ClassificationCode：TG386.3+2

year,vol(issue):pagenumber：2017,42(4):33-39

Abstract：

Based on Voce isotropic hardening model and Armstrong-Frederic nonlinear kinematic hardening model, a combined hardening model considering Bauschinger effect was proposed, and its veracity was verified by tension-compression tests for CR4 sheet metal. Then, the combined hardening model was introduced into the Stoughton equivalent drawbead model to replace the original isotropic hardening model, which improved the model by considering Bauschinger effect. For the rectangle and semicircle drawbeads, the drawbead restraining forces with different geometry parameters were obtained by the specially designed drawbead restraining force test device. The comparative results between calculation and experiment show that the drawbead restraining force predicted by the modified equivalent drawbead model is more accurate than that by the original model.

Funds：

国家自然科学基金资助项目(51275297)

韩超(1991-)，男，硕士研究生 E-mail：hanchao@sjtu.edu.cn 通讯作者：董湘怀(1955-)，男，博士，教授 E-mail：dongxh@sjtu.edu.cn

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