| 用有限变形弹塑性有限元法对金属塑性成形工艺的分析和优化 |
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| 引用本文： | 朱有利,王先进,康永林,张奎.用有限变形弹塑性有限元法对金属塑性成形工艺的分析和优化[J].机械工程学报,1996(6). |
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| 作者姓名： | 朱有利 王先进 康永林 张奎 |
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| 作者单位： | 装甲兵工程学院，北京科技大学 |
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| 摘 要： | 建立了一种基于中间构形及热力学第二定律的超弹性塑性本构关系，并由空间描述的弱平衡方程经一致转换得到了纠正的拉格朗日描述下的平衡方程，同时经线性化处理给出了非线性平衡方程组的Ｎｅｗｔｏｎ－Ｒｅｐｈｓｏｎ迭代求解格式。以线材通过锥形模的拉拨成形为例进行了全面的有限元擞值模拟，从而检验了有限变形弹塑性有限无法在模具设计、工艺优化以及产品缺陷分析等方面的有效性。
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| 关 键 词： | 有限变形，弹塑性，有限元法，本构 |
ANALYSls AND OPTIMIZATION OF METAL FORMINGPROCESS WITH FINITE DEFORMATIONELASTOPLASTIC FIMTEELEMENT METHOD |
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| Zhu Youli.ANALYSls AND OPTIMIZATION OF METAL FORMINGPROCESS WITH FINITE DEFORMATIONELASTOPLASTIC FIMTEELEMENT METHOD[J].Chinese Journal of Mechanical Engineering,1996(6). |
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| Authors: | Zhu Youli |
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| Affiliation: | Zhu Youli(Armoured Forces Engineering Institute)Wang Xianlin Kang Yonglin Zhang Kui(Universily ol Science and Technology Beijing) |
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| Abstract: | A hyperelastic-plastic constitutive relation is established based on intermediateconfigiiration and the second law of therinal dynamics. Updated Lagrangian equilibriuni equa-tions are derived through consisteat transformation of the spacial weak eqnilibrium equations,after which the Newton-Rephson iterative soliition formula of the nonlinear equilibrium eq-uations are given by consistent lineazization. An overall finite element simulation on conicaldie wire drawing process is performed. These jtistified the effectiveness of the finite deform-ation elasto-plastic finite element method in die designing, forming process optimizationand analysis on defects of final products |
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| Keywords: | Finite deformation Elasto-piasticity Finite element method Constitutive |
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