| 板料成形中悬空区起皱过程的数值模拟 |
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| 引用本文： | 李敏 周贤宾. 板料成形中悬空区起皱过程的数值模拟[J]. 中国机械工程, 1997, 8(4): 37-39 |
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| 作者姓名： | 李敏 周贤宾 |
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| 作者单位： | 北京航空航天大学制造工程系板料冲压成形教研室!北京市，100083，北京航空航天大学制造工程系!北京市，100083 |
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| 基金项目： | 福特—中国研究与发展基金!0941556，高等学校博士学科点基金!7537 |
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| 摘 要： | 以逐级更新Ｌａｇｒａｎｇｅ描述的有限变形虚功原理为理论基础，采用Ｍｉｎｄｌｉｎ退化板壳单元，开发板料冲压成形起皱过程的有限元数值软件ＷＲＳＩＭ，模拟了３种典型悬空区起皱问题，所得结果与实验观察基本一致，该软件可与其他成形过程数值模拟软件一起用于模具ＣＡＥ，以使在模具设计冲压件件的可成形性。
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| 关 键 词： | 板料成形 起皱 数值模拟 冲压 有限元 |
Numerical Simulation on Wrinkling of Noncontact Region in Sheet Metal Forming |
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| Li Minet al.. Numerical Simulation on Wrinkling of Noncontact Region in Sheet Metal Forming[J]. China Mechanical Engineering, 1997, 8(4): 37-39 |
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| Authors: | Li Minet al. |
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| Abstract: | The onset and growth of wrinkling or puckering in the noncontact region of a sheet forming part is investigated numerically. The FE code for wrinkling simulation in sheet metal forming is developed. It employs eight node Mindlin degenerated shell element and up dated Lagrange formulation. Three typical wrin kling processes due to nonuniform tension stress, shear stress and direct compressive stress are simulated with the code. The results are in agreement with experiments. The code can be used in the dies CAE together with other process simulation software so that the geometric defects and stability of parts can be analyzed in design ing dies. |
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| Keywords: | sheet metal forming wrinkling numerical simulation FEM |
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