QQ客服 官方微博 反馈留言

	MPM/MD handshaking method for multiscale simulation and its application to high energy cluster impacts
	Yang, W. ; Guo, Z.
	2010-05-07 ; 2010-05-07
关键词	Theoretical or Mathematical/ continuum mechanics Lennard-Jones potential metal clusters molecular dynamics method stacking faults/ handshaking method multiscale simulation high energy cluster impact molecular dynamics continuum mechanics material point method modified interpolation shape function Lennard-Jones potential lattice structure stacking fault energy transformation/ A6185 Modelling and computer simulation of solid structure A4620 Continuum mechanics A6170P Stacking faults, stacking fault tetrahedra and other planar or extended defects
中文摘要	We propose a new multiscale simulation method which seamlessly combines the conventional molecular dynamics (MD) with the continuum mechanics formulated under the material point method (MPM). In MPM, modified interpolation shape functions are adopted to reduce artificial forces on the hierarchical background grids. The multiscale method is validated using the examples of step-like wave and wave packet propagations within a bar. The method is applicable to several kinds of potentials including the Lennard-Jones, EAM and a bonding-angle related potential for silicon. Examples of high energy Cu-Cu and Si-Si cluster impacts are presented. The evolution of displaced atoms is found to depend on the underlying lattice structures. For the case of Cu-Cu cluster impacts, stacking faults play an important role. The displaced atoms, visualized in the method of "local crystalline order", propagate in an anisotropic manner. This implies the anisotropy in energy transformation process through multi-interactions among cluster and surface atoms. [All rights reserved Elsevier].
语种	英语 ; 英语
出版者	Elsevier ; UK
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/15788]
专题	清华大学
推荐引用方式 GB/T 7714	Yang, W.,Guo, Z.. MPM/MD handshaking method for multiscale simulation and its application to high energy cluster impacts[J],2010, 2010.
APA	Yang, W.,&Guo, Z..(2010).MPM/MD handshaking method for multiscale simulation and its application to high energy cluster impacts..
MLA	Yang, W.,et al."MPM/MD handshaking method for multiscale simulation and its application to high energy cluster impacts".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。