冲压成形工艺对薄壁构件碰撞性能影响的仿真研究 |
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引用本文: | 孙成智,陈关龙,林忠钦. 冲压成形工艺对薄壁构件碰撞性能影响的仿真研究[J]. 汽车工程, 2004, 26(2): 233-235,245 |
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作者姓名: | 孙成智 陈关龙 林忠钦 |
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作者单位: | 上海交通大学机械与动力工程学院,上海,200030;上海交通大学机械与动力工程学院,上海,200030;上海交通大学机械与动力工程学院,上海,200030 |
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摘 要: | 利用LS~DYNA通用有限元模拟软件,对板料冲压成形和闭口帽型梁的碰撞进行有限元模拟,研究了冲压成形工艺引起的壁厚减薄、残余应力和塑性应变对碰撞性能的影响。建立了板料冲压成形模拟和碰撞模拟之间的数据转化方法。研究结果表明冲压过程的壁厚变化、残余应力对碰撞模拟有着显著的影响。
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关 键 词: | 板料成形 数值模拟 碰撞 |
A Simulation Study on the Effects of Stamping Process on Crash Behavior of Thin-walled Panels |
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Abstract: | The stamping processes and crash simulation were performed using commercial FEA software LS-DYNA. The effect of thinning, residual stresses and plastic strains occurred in stamping process on the crash behavior of a closed hat section beam was studied. And a method of data conversion between simulations of sheet metal forming and crash test was established. |
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Keywords: | Sheet metal forming Numerical simulation Crash behavior |
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