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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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[1]林高用,张蓉,张振峰,等.变形速度对304奥氏体不锈钢室温拉伸性能的影响[J].湘潭大学自然科学学报,2005,3(9):91-94.
[2]津山香史.变形速度和温度对IF钢延展性的影响[J].武钢技术,1995,(8):61-65.
[3]雷正保.汽车覆盖件冲压成形CAE技术及其工业应用研究[R].长沙:中南大学,2003.
[4]Oguz Kayabasi,Bulent Ekici.Automated design methodology for automobile side panel die using an effective opti mization approach[J].Materials and Design,2006,(8):1-8.
[5]Silva MB,Baptista R MS O,Martins P A F.Stamping of automotive components:a numerical and experi mental inves-tigation[J].Journal of Materials Processing Technology,2004,(155-156):1489-1496.
[6]Dong Hongzhi,Lin Zhongqin.Investigation of sheet metal forming by numerical si mulation and experi ment[J].Journal of Materials Processing Technology,2000,(103):404-410.
[7]赵侠,李飞.汽车发动机罩外板拉深成形的数值模拟[J].锻压技术,2007,32(5):50-53.
[8]汪祥支,苏超,周锐,等.汽车保险杠拉深成形数值分析与工艺优化[J].锻压技术,2008,33(1):45-46.
[9]Mark Colgan,John Monaghan.Deep drawing process:anal-ysis and experi ment[J].Journal of Materials Processing Technology,2003,(132):35-41.
[10]潘江峰,钟约先,袁朝龙.基于遗传算法和神经网络技术的板料拉深成形参数优化[J].锻压技术,2006,31(6):44-46.
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