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摘要：
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基于Abaqus/Explicit动力显式有限元方法,分析了不同冲压速度下的某汽车覆盖件在冲压成形过程中节点速度、应变速率的分布规律。结果表明:随着冲压速度的提高,在变形过程中节点速度基本呈现增高的趋势,特别是变形较复杂的区域。同时,指出为了能更准确地模拟实际冲压过程,有限元材料模型中应采用应变速率大于10-2s-1获得的力学性能参数进行研究,以便更准确地反映实际材料特性。
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The Abaqus/Explicit dynamic explicit finite element method was used to simulate automotive sheet metal forming under the different punch velocity. The node's velocity and strain rate were analyzed. The result shows that with the increment of forming speed, the velocity of nodes increases accordingly, especially in complicated forming area. It was pointed out that the mechanics of automobile steel sheet with strain rate 10-2 s-1 should be used to FE material model in order to accurately simulate real forming.
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基金项目：
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宝钢研究院资助项目(517826)
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作者简介：
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参考文献：
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