Effect of fluid temperature on warm hydroforming of aluminum alloy square-section tubes
The warm hydroforming of 5A02 aluminum alloy square-section tubes was experimentally investigated with differential temperature between the die and the fluid. Uniaxial tensile test was conducted to obtain the material model of the aluminum alloy tube with thermal and strain rate hardening effects. A coupled thermo-mechanical finite element simulation was performed using LS-DYNA. It is shown that with a low fluid temperature, the formed outside corner radius of the square-section tube is smaller than that with a high fluid temperature. The influence of fluid temperature on the thickness distribution only focuses on the corner region. Mechanism analysis illustrates with a low fluid temperature, the corner region is more difficult to yield than the straight-wall region, therefore, homogeneous hoop strain can be realized and smaller corner radius can be achieved.
Wenjing Yuan Haobin Tian Xiaohang Liu Zhubin He Shijian Yuan
Mechanics & Electronic Engineering Faculty, Shanghai Second Polytechnic University, Shanghai 201209, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001,China School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
国际会议
桂林
英文
1-8
2010-11-16（万方平台首次上网日期，不代表论文的发表时间）