Fuzzy Control Optimization of Loading Paths for Hydroforming of Variable Diameter Tubes  

作　　者：Yong Xu Xuewei Zhang Wenlong Xie Shihong Zhang Xinyue Huang Yaqiang Tian Liansheng Chen 

机构地区：[1]College of Metallurgy and Energy,North China University of Science and Technology,Tangshan,063210,China [2]Shi-Changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang,110000,China [3]Shenyang Duoyuan Mechanical&Electrical Equipment Co.,Ltd.,Shenyang,110000,China

出　　处：《Computers, Materials & Continua》2024年第11期2753-2768,共16页计算机、材料和连续体（英文）

基　　金：supported by the Shenyang Science and Technology Program(grant number 22-301-1-10).

摘　　要：The design of the loading path is one of the important research contents of the tube hydroforming process.Optimization of loading paths using optimization algorithms has received attention due to the inefficiency of only finite element optimization.In this paper,the hydroforming process of 5A02 aluminum alloy variable diameter tube was as the research object.Fuzzy control was used to optimize the loading path,and the fuzzy rule base was established based on FEM.The minimum wall thickness and wall thickness reduction rate were determined as input membership functions,and the axial feeds variable value of the next step was used as output membership functions.The results show that the optimized loading path greatly improves the uniformity of wall thickness and the forming effect compared with the linear loading path.The round corner lamination rate of the tube is 91.2%under the fuzzy control optimized loading path,which was increased by 47.1%and 22.6%compared with linear loading Path 1 and Path 2,respectively.Based on the optimized loading path in the experiment,the minimum wall thickness of the variable diameter tube was 1.32 mm and the maximum thinning rate was 12.4%.The experimental results were consistent with the simulation results,which verified the accuracy of fuzzy control.The research results provide a reference for improving the forming quality of thin-walled tubes and plates.

关 键 词：Variable diameter tubes finite element simulation HYDROFORMING fuzzy control 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]