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一种板料拉深性能的快捷解析预测方法
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英文标题：Quick analytical prediction method of sheet metal drawing formability |
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作者：陆文琼 陈劼实 陈军 |
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单位：上海交通大学塑性成形工程系 |
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关键词：解析方法 热轧钢板 数值模拟 |
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分类号：TG386 |
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出版年,卷(期):页码：2009,34(2):67-70 |
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摘要：
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破裂是板料拉深成形的典型缺陷,板料在变形过程中,可以根据其厚度变化预测破裂,即厚度减薄到一定程度时即视为其破裂。本文以筒形件为例,基于Hill48屈服准则,推导出板料拉深变形的厚度计算公式,进而得出拉深后的最小厚度。比较了解析解与Dynaform数值模拟结果。算例表明:解析方法在预测板料拉深性能时有一定的应用价值。
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Fracture is a typical defect in sheet drawing process,it can be predicted by thickness variation during the course of drawing,and material usually becomes invalid when its thickness reduction reaches a limitation.Hill48 yield criterion was used to derive thickness variation equation during the cylindrical drawing process,then the minimum thickness after drawing was obtained from the equation.Good agreement was achieved by comparing analytic solution with Dynaform numerical simulation.that the analytic method can be applied in forecasting sheet metal drawing performance.
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基金项目：
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国家863高科技发展计划项目(2007AA04Z130);;
宝钢集团科研项目资助
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作者简介：
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参考文献：
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[1]陈劼实,周贤宾,刘长丽.数值模拟中应用最小厚度准则预测板料成形极限[J].中国机械工程,2006,17(增刊):67-70.
[2]王瑞珍,罗海文,董瀚.汽车用高强度钢板的最新研究进展[J].中国冶金,2006,16(9):1-12.
[3]江海涛,唐荻,米振莉.汽车用先进高强度钢的开发及应用进展[J].钢铁研究学报,2007,19(8):1-6.
[4]肖华,刘艳,汤禹成,等.高强度钢冲压回弹量对板料力学性能参数的灵敏度分析[J].锻压装备与制造技术,2007,42(2):67-72.
[5]吴军,叶卫平.双相钢的研究现状及应用展望[J].钢铁研究,1994,(2):51-57,50.
[6]Hill R.A theory of the yielding and plastic flow of anisotropicmetals[A].Proceedings of the Royal Society of London[C].London:Mathematical and Physical Sciences,1948.
[7]梁炳文,胡世光.板料成形塑性理论[M].北京:机械工业出版社,1987.
[8]Wagoner R H,Chenot J L.Fundamentals of Metal Forming[M].New York:John Wiley&Sons Ltd.,1997.
[9]邵鹏飞,王秀喜.塑性各向异性板料本构关系及冲压成形的数值模拟[J].力学季刊,2000,(12):470-474.
[10]同济大学数学教研室.高等数学[M].北京:高等教育出版社,2001.
[11]Hallquist J O.LS-DYNA Keyword User s Manual[M].Califonia:Livermore Software Technology Corpcration,2001.
[12]Barlat F,Lian J.Plastic behavior and stretch ability ofsheet metals.part I:A yield function for orthotropic sheetsunder plane stress conditions[J].International Journal ofPlasticity,1989(5):51-66.
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