摘要: |
对一种复杂截面型材的拉弯成形过程进行了有限元数值模拟分析。通过模拟试验得到最佳的模具与型材间隙;通过分析预拉量和补拉量对截面畸变和回弹的影响,得出最佳加载过程参数。对大尺寸异型截面型材的模拟过程进行了优化,解决了拉弯成形模拟中动态效应明显、计算量过大等问题。 |
关键词: 型材拉弯;数值模拟;模具与型材间隙;复杂截面型材;加载过程 |
基金项目: |
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Numerical Simulation on Profile Stretch-bending with Large Complex Cross Section |
Meng Pengfei1, Li Xiaoxing1, Jin Chaohai1, Gao Hongzhi1, Yin Ping2
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1. School of Mechanical Engineering and Automation, Beihang University;2. Capital Aerospace Machinery Company
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Abstract: |
This paper deals with the stretch-bending process of an extruded aluminum profile 2A12-O which possesses complex cross section and large length dimension through ABAQUS. The proper clearance between die and profile was probed and obtained. A set of best loading parameters were determined by studying the influence of pre-stretch and post-stretch on distortions and springback. With material property inputted directly from experiments, the overall stretch-bending process of this aluminum profile was simulated and optimized, greatly eliminating potential forming defects. |
Key words: profile stretch bending;numerical simulation;die and profile clearance;complex cross section profile;loading process |