Uncertainty analysis and robust design optimization for the heat-assisted bending of high-strength titanium tube

作     者：ZHANG Zhao YANG JingChao HUANG WeiLiang MA Jun LI Heng ZHANG Zhao;YANG JingChao;HUANG WeiLiang;MA Jun;LI Heng

作者机构：Taicang Yangtze River Delta Research InstituteNorthwestern Polytechnical UniversityTaicang 215400China State Key Laboratory of Solidification ProcessingNorthwestern Polytechnical UniversityXi’an 710072China 

基　　金：supported by the National Natural Science Foundation of China(Grant No.51775441) 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2021年第64卷第10期

页      码：2174-2185页

摘      要：Heat-assisted rotary draw bending(HRDB)is a promising technique for manufacturing difficult-to-form tubular components comprising high-strength titanium tubes(HSTTs)with small bending ***,as a multidie constrained and thermomechanical coupled process with many uncertainty factors,a high risk of several defects,such as cross-section distortion,over wall thinning,or even cracking,is *** the robust design optimization(RDO)of complex forming processes remains a nontrivial and challenging scientific ***,considering a high-strength Ti-3Al-2.5V titanium alloy tube as a case material,the five significant uncertainty factors in HRDB,i.e.,temperature distribution,tube geometrical characteristics,tube material parameters,tube/tool friction,and boost velocity had been ***,considering the preheating and HRDB of HSTT,a whole-process thermomechanical three-dimensional finite element model was established and validated for virtual ***,considering the maximum section distortion Q and maximum wall-thickness thinning t as the optimization objectives and the mean and variance of material and forming parameters,an RDO model was ***,the Pareto optimal solutions were obtained using the nondominated sorting genetic algorithm II,and a minimum distance selection method was employed to obtain the satisfactory *** show that the optimized solutions considering the uncertainty factors reduce the maximum section distortion rate of HSTT after bending by 38.1%and the maximum wallthickness thinning rate by 27.8%.

主 题 词：robust design optimization uncertainty factors heat-assisted bending high-strength titanium tube 

学科分类：080503[080503] 08[工学] 0805[工学-能源动力学] 0802[工学-机械学] 080201[080201] 

核心收录：

D　O　I：10.1007/s11431-021-1881-8

馆 藏 号：203104920...