Transactions of Materials and Heat Treatment

Title：Optimization design on surface frictional characteristics for automobile muffler half-shell die

Authors： Jiang Jiaxing Fu Yonghong Fu Hao Yang Jie

Unit： Jiangsu University

KeyWords： drawing die region division frictional characteristics thickness uniformity friction sensitive regions

ClassificationCode：TG316

year,vol(issue):pagenumber：2022,47(5):188-194

Abstract：

For the automobile muffler half-shell die, on the basis of revealing the influence laws for friction characteristics of die surface on the thickness uniformity of formed parts, the frictional characteristics in the friction sensitive regions on the die surface were designed optimally by numerical simulation method, First, the automobile muffler half-shell die surface was divided into regions, and the drawing process was numerically simulated by software ABAQUS. Then, the influences of friction factors for different regions in the die surface on the thickness uniformity of workpiece were explored by single factor analysis method, and the friction sensitive regions in the die surface were determined. Furthermore, taking the sheet thickness uniformity as the optimization goal, the friction characteristics in the friction sensitive regions were designed optimally by uniform design method, and the optimal friction factor combination for the surface of the automobile muffler half-shell die was obtained. The optimized simulation results show that the fracture possibility at the thinnest part of the formed part decreases by 13.03%, and the variation rate of the formed part thickness drops by 6.68%, which provides design reference for laser microtexture processing of the die surface based on the optimized distribution of friction characteristics.

Funds：

国家自然科学基金资助项目（51705210、51705211）；江苏省博士后科研资助计划（2019K195）

作者简介：蒋嘉兴（1995-），男，硕士，E-mail：1020302332@qq.com；通信作者：符昊（1988-），男，博士，助理研究员，E-mail：fh@ujs.edu.cn

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