A New Combined Scheme of Discrete Element Method and Meshless Method for   Numerical Simulation of Continuum/Discontinuum Transformation

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	A New Combined Scheme of Discrete Element Method and Meshless Method for Numerical Simulation of Continuum/Discontinuum Transformation
	Shan, Li ; Cui, Ning ; Cheng, Ming ; Liu, Kaixin
刊名	cmes computer modeling in engineering sciences
	2012
关键词	Discrete element method Meshless method Impact problems continuum discontinuum Algorithm of strain tensor GALERKIN MLPG APPROACH FLOWS
英文摘要	In the present paper, a combined scheme of discrete element method (DEM) and meshless method for numerical simulation of impact problems is proposed. Based on the basic principle of continuum mechanics, an axisymmetric DEM framework is established for modeling the elastoplastic behavior of solid materials. Failure criteria are introduced to model the transformation from a continuum to a discontinuum. The friction force between contact elements is also considered after the failure appears. So our scheme can calculate not only the behavior of continuum and discontinuum, but also the transformation process from a continuum to a discontinuum. In addition, a meshless interpolation method is adopted to calculate the strain tensor, which is a non-local data fitting algorithm, and certain strain and stress measures are defined. Numerical simulations are carried out to validate our scheme. The numerical results agree well with those obtained by the finite element method (FEM) and the corresponding experiment respectively, which proves the feasibility and reliability of our computational scheme for analyzing the impact problems.; Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications; SCI(E); EI; 0; ARTICLE; 4; 353-383; 83
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/393688]
专题	工学院
推荐引用方式 GB/T 7714	Shan, Li,Cui, Ning,Cheng, Ming,et al. A New Combined Scheme of Discrete Element Method and Meshless Method for Numerical Simulation of Continuum/Discontinuum Transformation[J]. cmes computer modeling in engineering sciences,2012.
APA	Shan, Li,Cui, Ning,Cheng, Ming,&Liu, Kaixin.(2012).A New Combined Scheme of Discrete Element Method and Meshless Method for Numerical Simulation of Continuum/Discontinuum Transformation.cmes computer modeling in engineering sciences.
MLA	Shan, Li,et al."A New Combined Scheme of Discrete Element Method and Meshless Method for Numerical Simulation of Continuum/Discontinuum Transformation".cmes computer modeling in engineering sciences (2012).