基于离散元法的散粒货物数值模拟研究
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摘要
介绍了散粒货物颗粒的离散元研究方法,着重阐述了离散元法数学模型的构建,以及程序的实现,通过离散元法对散粒货物的数值模拟研究,使人们可以更为直观的,有效,便捷的观察和研究散粒货物的运动状态,提高设计人员的工作效率,为产品研发提供指导和建议。
This paper introduces the discrete element research method of bulk cargo particles, emphatically expounds the construction of the mathematical model of discrete element method and the realization of the program. The study of bulk cargo by discrete element method enables people to observe and study the movement state of bulk cargo more intuitively, effectively and conveniently, improve the work efficiency of designers, and provide guidance and suggestions for product research and development.
This paper introduces the discrete element research method of bulk cargo particles, emphatically expounds the construction of the mathematical model of discrete element method and the realization of the program. The study of bulk cargo by discrete element method enables people to observe and study the movement state of bulk cargo more intuitively, effectively and conveniently, improve the work efficiency of designers, and provide guidance and suggestions for product research and development.
引文
[1]吴爱祥,孙业志,刘湘平.散体动力学理论及其应用[M].北京:冶金工业出版社,2002.
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[5]Nezami E G,Hashash M A,Zhao D W,et al.A fast contact detection algorithm for 3-D discrete element method[J].Computers and Geotechnics,2004,31:575-587.
[6]Vemuri B C,L C,Vu-Quou L.Efficient and accurate collision detection for granular flow simulation[J].Graphical Models and Image Processing,1998,60:403-422.
[2]Cundall P A,Strack O D L.A discrete numerical model for granular assemblies[J].Geotechnique,1979,299:47-65.
[3]Johnson K L.Contact mechanics[M].Cambridge:Cambridge U-niversity Press,1987.
[4]Mindlin R D,Deresiewicz H.Elastic spheres in contact under varying oblique forces[J].Journal of Applied Mechanics,1953,20:327-344.
[5]Nezami E G,Hashash M A,Zhao D W,et al.A fast contact detection algorithm for 3-D discrete element method[J].Computers and Geotechnics,2004,31:575-587.
[6]Vemuri B C,L C,Vu-Quou L.Efficient and accurate collision detection for granular flow simulation[J].Graphical Models and Image Processing,1998,60:403-422.