Closed Trans-Scale Statistical Microdamage Mechanics

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	Closed Trans-Scale Statistical Microdamage Mechanics
	Bai YL(白以龙); Xia MF(夏蒙棼); Ke FJ(柯孚久); Li HL(李晖凌); Bai, YL (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
发表期刊	Acta Mechanica Sinica
	2002
卷号	18 期号:1 页码:1-17
ISSN	0567-7718
摘要	Damage and failure due to distributed microcracks or microvoids are on the challenging frontiers of solid mechanics. This appeals strongly to tools not yet fully developed in continuum damage mechanics, in particular to irreversible statistical thermodynamics and a unified macroscopic equations of mechanics and kinetic equations of microstructural transformations. This review provides the state of the art in statistical microdamage mechanics. (1) It clarifies on what level of approximation continuum damage mechanics works. Particularly, D-level approximation with dynamic function of damage appears to be a proper closed trans-scale formulation of the problem. (2) It provides physical foundation of evolution law in damage mechanics. Essentially, the damage-dependent feature of the macroscopic evolution law is due to the movement of microdamage front, resulting from microdamage growth. (3) It is found that intrinsic Deborah number D*, a ratio of nucleation rate over growth rate of microdamage, is a proper indication of critical damage in damage mechanics, based on the idea of damage localization. (4) It clearly distinguishes the non-equilibrium damage evolution from equilibrium phase transition, like percolation. Finally, some comments on its limitations are made.
学科领域	力学
收录类别	SCI ; EI ; CSCD
语种	英语
WOS记录号	WOS:000174186600001
关键词[WOS]	SHORT-FATIGUE-CRACKS ; EVOLUTION ; FRACTURE ; DAMAGE ; SOLIDS ; GROWTH ; FAILURE ; DENSITY ; SYSTEM
WOS研究方向	Engineering ; Mechanics
WOS类目	Engineering, Mechanical ; Mechanics
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/15630
专题	力学所知识产出(1956-2008)
通讯作者	Bai, YL (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Bai YL,Xia MF,Ke FJ,et al. Closed Trans-Scale Statistical Microdamage Mechanics[J]. Acta Mechanica Sinica,2002,18,1,:1-17.
APA	白以龙,夏蒙棼,柯孚久,李晖凌,&Bai, YL .(2002).Closed Trans-Scale Statistical Microdamage Mechanics.Acta Mechanica Sinica,18(1),1-17.
MLA	白以龙,et al."Closed Trans-Scale Statistical Microdamage Mechanics".Acta Mechanica Sinica 18.1(2002):1-17.

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