Transactions of Materials and Heat Treatment

Title：Optimization on loading path of internal high pressure forming for parallel doublebranch based on response surface method

Authors： Guo Heng1 Xiao Xiaoting1 Chen Mingtao1 Tong Jianghuai1 Deng Jun1 Wang Guo1 Zhou Zirong2

Unit： (1.School of Materials and Energy Guangdong University of Technology Guangzhou 510006 China 2. School of Mechanical Engineering Dongguan University of Technology Dongguan 523808 China)

KeyWords： internal high pressure forming loading path response surface method branch pipe height thinning ratio finite element

ClassificationCode：TG113.11

year,vol(issue):pagenumber：2019,44(2):87-92

Abstract：

To obtain a better forming height of parallel doublebranch, the loading path parameters in the parallel doublebranch forming process were optimized based on the characteristics of the internal high pressure forming process. The experimental design was carried out by using Design Expert, and the simulation study of internal high pressure forming process for parallel doublebranch was made by using finite element software of ABAQUS. Taking the branch height（BH）and thinning ratio（TR） as objective functions, the credibility of them was verified based on the variance analysis in Design Expert. By optimizing and analyzing multiple objects through expected value method, an optimized loading path of internal high pressure forming for parallel double branch was formed. And by using the optimized loading path to verify the test, and comparing the branch height and thinning ratio in ABAQUS, experiments and RSM respectively, it is found that the height error of branch is within 0.9 mm and the experimental thinning ratio is 3.5% higher than the expect value in RSM.

Funds：

基金项目:国家自然科学基金资助项目(U0934006);2018年东莞市社会科技发展（重点）项目（20185071021602）

作者简介：郭衡（1993-），男，硕士研究生 Email：994393629@qq.com 通讯作者：肖小亭（1957-），男，博士，教授 Email：xxting1@163.com

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