Cross-section distortion and springback characteristics of double-cavity aluminum profile in force controlled stretch-bending

作     者：Zhi-wen LIU Zi-xuan DONG Cong-chang XU Jie YI Luo-xing LI 刘志文;董子轩;徐从昌;易杰;李落星

作者机构：School of Mechanical EngineeringUniversity of South ChinaHengyang 421001China State Key Laboratory of Advanced Design and Manufacturing Technology for VehicleHunan UniversityChangsha 410082China 

基　　金：the National Natural Science Foundation of China(Nos.52005244,U20A20275) the Natural Science Foundation of Hunan Province,China(Nos.2021JJ30573,2023JJ60193) the Open Fund of State Key Laboratory of Advanced Design and Manufacture for Vehicle Body,China(No.31715011) 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2024年第34卷第8期

页      码：2476-2490页

摘      要：3D elastic-plastic FE model for simulating the force controlled stretch-bending process of double-cavity aluminum profile was established using hybrid explicit−implicit solvent *** the computational accuracy and efficiency,the optimal choices of numerical parameters and algorithms in FE modelling were *** formation mechanisms of cross-section distortion and springback were *** effects of pre-stretching,post-stretching,friction,and the addition of internal fillers on forming quality were *** results show that the stress state of profile in stretch-bending is uniaxial with only a circumferential *** stress distribution along the length direction of profile is non-uniform and the maximum tensile stress is located at a certain distance away from the center of *** aluminum profile is gradually attached to bending die,the distribution characteristic of cross-section distortion along the length direction of profile changes from V-shape to *** unloading the forming tools,cross-section distortion decreases obviously due to the stress relaxation,with a maximum distortion difference of 13%before and after *** pre-stretching and post-stretching forces increase,cross-section distortion increases gradually,while springback first decreases and then remains *** increasing friction between bending die and profile,cross-section distortion slightly decreases,while springback ***-section distortion decreases by 83%with adding PVC fillers into the cavities of profile,while springback increases by 192.2%.

主 题 词：hollow aluminum profile force controlled stretch-bending numerical parameters springback analysis approach cross-section distortion springback process parameters 

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：10.1016/S1003-6326(24)66554-4

馆 藏 号：203140232...