| 板料冲压成形过程的一种数值模拟方法 |
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| 引用本文： | 陈中奎,施法中.板料冲压成形过程的一种数值模拟方法[J].北京航空航天大学学报,2001,27(3):340-343. |
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| 作者姓名： | 陈中奎 施法中 |
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| 作者单位： | 北京航空航天大学 机械工程及自动化学院 |
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| 基金项目： | 国家高技术研究发展计划(863计划);863-511-820-020; |
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| 摘 要： | 在板料冲压成形过程中存在着大变形、大应变,且几何、物理及边界条件三重非线性相互耦合使得计算过程较为复杂.在虚功原理的基础上对板料冲压成形过程的弹塑性有限元分析方法进行了研究,并将有限变形弹塑性有限元法引入板料冲压成形过程,采用更新拉格朗日(ULM, Updated Lagrange Method) 方法描述,推导了有限元列式,建立了板料成形过程的有限元分析模型,开发了分析程序.通过对汽车油底壳的成形模拟说明了模型的正确性.
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| 关 键 词： | 冲压 有限元法 虚功原理 |
| 文章编号： | 1001-5965(2001)03-0340-04 |
| 收稿时间： | 2000-01-07 |
| 修稿时间： | 2000年1月7日 |
Numerical Simulation Method of Sheet Metal Stamping Process |
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| CHEN Zhong-kui,SHI Fa-zhong.Numerical Simulation Method of Sheet Metal Stamping Process[J].Journal of Beijing University of Aeronautics and Astronautics,2001,27(3):340-343. |
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| Authors: | CHEN Zhong-kui SHI Fa-zhong |
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| Institution: | Beijing University of Aeronautics and Astronautics, School of Mechanical Engineering and Automation |
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| Abstract: | Due to the large deformation and large strain, in addition to the three non linearity (geometry, physics and contact) coupling with one another during the stamping process, the computational process is extraordinarily complicated. Based on the principle of virtual work, this paper deals with elastic plastic FEM(Finite Element Methods) of sheet metal stamping process, and then this method is introduced into related analysis processes. At the same time, by using Updated Lagrange Method, a formulation of FEM is deduced, a FEM model of sheet metal stamping process is proposed, and a corresponding analysis program is developed. Numeric results obtained from an automotive oil pan are illustrated to show the model's validity. |
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| Keywords: | stamping finite element methods principle of virtual work |
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