Numerical Simulation and Experiment of Internal High Pressure Forming (IHPF) of 5A02 Aluminum Alloy Thin-Walled Shaped Tubes

被引：0
作者：
Jin S. [1 ]
Tang Z. [1 ]
Huang Z. [1 ]
机构：
[1] School of Mechanical Engineering, University of Science and Technology Beijing, Beijing
来源：
Huang, Zhongguo (jinshunyao@ustb.edu.cn) | 1600年 / Editorial Office of Chinese Journal of Rare Metals卷 / 44期
关键词：
Internal high pressure forming (IHPF); Numerical simulation; Pam-stamp; Shaped tube;
D O I：
10.13373/j.cnki.cjrm.XY19040026
中图分类号：
学科分类号：
摘要：
The internal high pressure forming (IHPF) of 5A02 aluminum alloy thin-walled shaped tube was conducted using finite element analysis software Pam-stamp. The process of fitting the die and deformation mechanism of the dangerous section was studied through numerical simulation, the loading path of internal pressure and feeding was optimized and verified through experiment. The results showed that the area with a large radius of curvature fitted the die firstly during internal high pressure forming process, and then the area with a small radius of curvature was attached. The wall thickness of the area fitted to the die finally was severely thinned even cracked. The numerical simulation results of different loading paths showed that the improper matching of internal pressure and feeding in the forming process caused the tube to fold or break. The optimized feeding could avoid the impact deformation and excessive displacement accumulation, to prevent the severe thinning of the wall thickness and excessive material filling of the tube wall. The numerical simulation results and the actual experiment results were basically consistent, and the variation trend of the wall thickness distribution at the dangerous section was consistent. It was verified that the feeding in the IHPF process could effectively supplement the material in the forming area of the tube fitting, which was conducive to the uniform flow of the material in the deformation process, so as to control the thinning rate of the wall thickness. The experiment results showed that the optimized r6 path was reasonable and feasible, and could be effectively referenced by the process of IHPF of the shaped tube. © Editorial Office of Chinese Journal of Rare Metals. All right reserved.
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页码：1121 / 1128
页数：7
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