| 薄板成形数值模拟的一种有效单元模型 |
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| 引用本文： | 柳玉起,那景新,王炅,胡平.薄板成形数值模拟的一种有效单元模型[J].吉林大学学报(工学版),1997(1). |
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| 作者姓名： | 柳玉起 那景新 王炅 胡平 |
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| 作者单位： | 理学院·浙江大学ＣＡＤ＆ＣＧ国家重点实验室 |
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| 基金项目： | 国家自然科学基金,国家教委优秀青年教师基金 |
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| 摘 要： | 将离散Ｋｉｒｃｈｈｏｆ理论（ＤＫＴ）平板弯曲单元和薄膜单元的组合模型引入到弹塑性有限变形的虚功率增率型原理中。采用Ｈｉｌ（１９７９）厚向各向异性屈服函数，模拟了韧性金属板材液压胀形过程的分叉失稳以及后继变形局部化的演化过程。与实验结果比较表明所建立的薄板成形有限元模型是有效的
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| 关 键 词： | DKT单元 虚功率增率原理 有限元数值模拟 胀形 |
An Effective Element Model for the Numerical Simulation of Sheet Metal Forming |
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| Liu Yuqi,Na Jingxin,Wang jiong,Hu Ping.An Effective Element Model for the Numerical Simulation of Sheet Metal Forming[J].Journal of Jilin University:Eng and Technol Ed,1997(1). |
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| Authors: | Liu Yuqi Na Jingxin Wang jiong Hu Ping |
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| Abstract: | A compound model including discrete Kirchhoff theory (DKT) pate shell element and membrane element is introduced into virtual work rate principle of elasto plastic finite deformation. The evolution process of bifurcation instability and following deformation localization in the hydrostatic bulging of ductile sheet metal is simulated by using Hills(1979) thickness anisotropic yield function. The bulging process of Semi sphere punch is simulated by introducing Coulomb friction theory. The simulation results are compared with experimental ones, which shows the validity of the finite element model for sheet metal forming. |
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| Keywords: | DKT element model virtual work rate principle finite element numerical simulation bulging |
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