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摘要：
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本文以板材模拟有限元软件Dynaform为工具,选择板料厚度t,模具间隙z,压边力F,凹模圆角半径Rd,凸模圆角半径rp和材料的K值,n值,r值等9个参数为变量,按照选定的正交试验表对32组不同参数组合的U形工件进行成形及回弹模拟分析。最终按照影响热轧钢U形工件回弹量的敏感程度,对9个参数进行了排序,找出影响U形工件回弹量的主要因素,以便于在实践生产中更加有效地控制热轧钢U形工件的弯曲回弹。
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In this paper,32 groups of simulating experiments were carried out for U-bending parts according to selected orthogonal experiment table,using the special FEM(finite element method) software Dynaform.There were 9 variables in these experiments,including sheet metal thickness t,die clearance z,binder force F,radius of lower die R_d,radius of upper die r_p and material parameters K,n,r,which mainly affect the material properties.Finally,the 9 parameters were ordered according to their contribution to the springback, so that more effective measures can be taken out to control the springback of U-bending hot-rolled metal sheet parts.
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作者简介：
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参考文献：
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[1]刘斌,王敏杰.V形件弯曲及回弹影响因素的研究[J].锻压技术,2002,(5):27 30.
[2]赵叶锋,等.U形件弯曲成形中回弹的数值模拟研究[J].拖拉机与农用运输车,2005,(2):42 44.
[3]张开坚,等.汽车大梁用热轧钢板的开发[J].钢铁钒钛,2000,21(3):44 47.
[4]王万中.试验的设计与分析[M].高等教育出版社,2004.
[5]Maker B N.Input parameters for metal forming simulation u-sing LS-DYNA[M].Livermore Software Technology Cor-poration,2000.
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