Coupling between finite element method and material point method for problems with extreme deformation

被引:2
|
作者
Yanping Lian
机构
关键词
material point method; coupling method; conversion scheme; penetration; landslide;
D O I
暂无
中图分类号
TB30 [工程材料一般性问题]; O241.82 [偏微分方程的数值解法];
学科分类号
070102 ; 0805 ; 080502 ;
摘要
As a Lagrangian meshless method,the material point method(MPM) is suitable for dynamic problems with extreme deformation,but its efficiency and accuracy are not as good as that of the finite element method(FEM) for small deformation problems.Therefore,an algorithm for the coupling of FEM and MPM is proposed to take advantages of both methods.Furthermore,a conversion scheme of elements to particles is developed.Hence,the material domain is firstly discretized by finite elements,and then the distorted elements are automatically converted into MPM particles to avoid element entanglement.The interaction between finite elements and MPM particles is implemented based on the background grid in MPM framework.Numerical results are in good agreement with experimental data and the efficiency of this method is higher than that of both FEM and MPM.
引用
收藏
页码:17 / 20
页数:4
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