Transactions of Materials and Heat Treatment

Title：Finite element analysis on viscous pressure forming for aluminum alloy square

Authors： Gao Tiejun Zhang Wenzhuo Chen Peng Wang Zhongjin

Unit： Shenyang Aerospace University AVIC SAC Commercial Aircraft Company Limited Harbin Institute of Technology

KeyWords： aluminum alloy square box viscous pressure forming flow rule of material wall thickness distribution

ClassificationCode：TG306

year,vol(issue):pagenumber：2016,41(3):18-21

Abstract：

For the problems of low plasticity formability and the non-uniform deformation of aluminum alloy square box, the viscous pressure forming process was researched. Based on the characteristic of viscous medium, the generation of defects such as fracture and wrinkling was expected to prevent so as to improve the workability and forming quality of aluminum alloy square box. In the research process, the viscous pressure forming process of aluminum alloy square box was simulated and analyzed by the finite element software ANSYS/LS-DYNA. Furthermore, blank dimension and blank holder force loading curve were optimized according to the characteristics of specimen shape and mechanical property of material, and the dimension, shape and wall thickness distribution regulation of specimens were obtained under different forming parameters. At last, the experiment on viscous pressure forming was conducted. The results show that geometric shape has a great effect on the flow regulation of material and forming quality of specimen, and the required aluminum alloy square box can be formed directly by viscous pressure forming with the proper blank holder force.

Funds：

国家自然科学基金资助项目(51205260)；辽宁省自然科学基金资助项目(2013024014)

高铁军(1977-)，男，博士，副教授

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