摘要:
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针对塑性有限元模拟中的局部网格重划问题 ,提出了节点自动重定位技术。介绍了模具干涉和单元畸变两种情况 ,通过改变局部网格单元的形函数进行节点重定位。并进行了复合挤压的实例模拟。结果证明该技术是实现局部网格重划的有效途径。
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The automatic renoding scheme is introduced as a kind of local remeshing during plastic FEM simulation, which is implemented with modifying the shape functions of local elements, including two conditions:die interference and element degeneracy.Lastly an example is proposed.The results indicate that renoding is an effective approach to local remeshing
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作者简介:
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参考文献:
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1 孙新岭 弹体毛坯压型冲盂有限元分析及网格自动划分技术 重庆大学硕士学位论文 ,2 0 0 0 :52~ 54
2 NKLee,JHYoon ,DYYang .FiniteElementAnalysisofLargeDeformationbyAutomaticRenodingasAWeakRemeshingTech nique .Int.J .Mech .Sci.,1 992 ,34 (4) :2 55~ 2 7
3 陈军 ,阮雪榆 反挤工艺三维刚塑性有限元模拟及其局部网格细分技术的应用 锻压技术 ,1 998,2 3 (1 )
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