DISCRETE ELEMENT MODELING OF THREE-DIMENSIONAL IMPACT PROBLEMS INCLUDING ELASTOPLASTIC DEFORMATIONS AND SEVERE DAMAGES

摘要：

In this paper,a scheme of the discrete element method (DEM) for numerical simulation of three-dimensional (3-D) impact problems including elastoplastic deformations and severe damages is proposed.Based on the basic principles of continuum mechanics,a 3-D DEM framework is established for modeling the elastoplastic behavior of solid materials.Failure criteria are introduced for modeling the transformation from continuum to discontinuum.The numerical results obtained by the proposed scheme agree well with those obtained by the finite element method and the corresponding experiment respectively,which proves the feasibility and the reliability of our scheme.

关键词： DEM 3-D impact problems continuum plasticity damage

作者: L.Shan M.Cheng K.X.Liu

作者单位: Department of Mechanics & Aerospace Engineering,College of Engineering,Peking University,Beijing 100 Center for Applied Physics and Technology,Peking University,Beijing 100871,China

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 973-976

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）