Trans-Scale Coupling in Multiscale Simulations

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	Trans-Scale Coupling in Multiscale Simulations
	Rong F(荣峰); Wang HY(汪海英); Xia MF(夏蒙棼)
刊名	International Journal for Multiscale Computational Engineering
	2006
通讯作者邮箱	baiyl@lnm.imech.ac.cn
卷号	4 期号:1 页码:169-181
ISSN号	1543-1649
通讯作者	Bai, YL (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China.
合作状况	其它
中文摘要	Trans-scale coupling plays a significant role in multiscale problems. Since the mechanisms governing the trans-scale coupling vary from case to case, to identify and characterize the governing mechanisms of trans-scale coupling are the most crucial points in multiscale simulations. The failure of solid media is a typical multiscale process. This paper chooses two model problems, i.e., damage localization in spallation of an Al alloy and the catastrophe transition in a rock under quasi-static loading, to illustrate the trans-scale coupling in different phases of material failure. In the spallation process the governing mechanism of trans-scale effects is the coupling and competition between dynamics at different levels, which can be effectively characterized by two imposed Deborah numbers. In the catastrophe failure of heterogeneous media the governing mechanism of trans-scale coupling is the strong and sensitive coupling between the nonlinear dynamics and the disordered heterogeneity. In addition, the inverse cascade of damage evolution magnifies the effects of microstructures on failure and induces trans-scale sensitivity. Although the concept of critical sensitivity seems to be promising in catastrophe prediction, novel concepts and numerical schemes are still badly needed.
学科主题	力学
类目[WOS]	Engineering, Multidisciplinary ; Mathematics, Interdisciplinary Applications
研究领域[WOS]	Engineering ; Mathematics
收录类别	SCI
原文出处	http://dx.doi.org/10.1615/IntJMultCompEng.v4.i1.110
语种	英语
WOS记录号	WOS:000238918900011
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/15434]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Rong F,Wang HY,Xia MF. Trans-Scale Coupling in Multiscale Simulations[J]. International Journal for Multiscale Computational Engineering,2006,4(1):169-181.
APA	Rong F,Wang HY,&Xia MF.(2006).Trans-Scale Coupling in Multiscale Simulations.International Journal for Multiscale Computational Engineering,4(1),169-181.
MLA	Rong F,et al."Trans-Scale Coupling in Multiscale Simulations".International Journal for Multiscale Computational Engineering 4.1(2006):169-181.