Transactions of Materials and Heat Treatment

Title：Optimization on drawing process parameters based on numerical simulation and experiment design

Authors： Zhang Xiaoxu Du Zixue

Unit： Chongqing College of Electronic Engineering Chongqing Jiaotong University

KeyWords： drawing forming orthogonal test numerical simulation wrinkling criterion maximum thinning ratio

ClassificationCode：TG386.1

year,vol(issue):pagenumber：2018,43(6):180-184

Abstract：

For the defects of cracking and wrinkling easily occurring in the forming of automotive sheet metal stamping, the finite element model of drawing forming of automobile floor part was established by software AutoForm taking blank holder force, press speed and friction factor as design variables, and the drawing process parameters of automotive floor part were designed by the orthogonal test combining numerical simulation and experimental design. Furthermore, the approximate range of the design variables was determined by single factor test, and the orthogonal test design was carried out. Finally, the numerical simulation was conducted according to the designed test group based on the maximum thinning ratio and wrinkling criteria. In the end, the optimal combination of process parameters were solved by the multiobjective and multiconstraint method, and the optimized parameters including blank holder force of 1.5×106 N, press speed of 5 mm·s-1 and friction factor of 0.12 were obtained. Through experimental verification, the actual test parts and numerical simulation results were basically the same. It shows that the method can be effectively used to determine the forming process parameters in the development of stamping dies.

Funds：

国家科技支撑计划项目（2013BAG06B01）

张晓旭(1982-)，女，硕士，讲师；Email：zxx15696212212@163.com

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