Progressive failure constitutive model of fracture plane in geomaterial based on strain strength distribution

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	Progressive failure constitutive model of fracture plane in geomaterial based on strain strength distribution
	Li SH(李世海); Zhou D(周东); Zhou, D (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
发表期刊	INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
	2013-02
卷号	50 期号:3-4 页码:570-577
ISSN	0020-7683
摘要	Progressive failure constitutive model of fracture plane in geomaterial based on strain strength distribution is proposed. The basic assumption is that strain strength of geomaterial comply with a certain distribution law in space. Failure of tensile fracture plane and shear fracture plane in representative volume element (RVE) with iso-strain are discussed, and generalized failure constitutive model of fracture plane in RVE is established considering combined effect of tension and shear. Fracture plane consists of elastic microplanes and fractured microplanes. Elastic microplanes are intact parts of the fracture plane, and fractured microplanes are the rest parts of the fracture plane whose strain have ever exceeded their strain strength. Interaction mode on elastic microplanes maintains linear elasticity, while on fractured microplanes it turns into contact and complies with Coulomb's friction law. Intact factor and fracture factor are defined to describe damage state of the fracture plane which can be easily expressed with cumulative integration of distribution density function of strain strength. Strong nonlinear macroscopic behavior such as yielding and strain softening can be naturally obtained through statistical microstructural damage of fracture plane due to distribution of strain strength. Elastic-brittle fracture model and ideal elastoplastic model are special cases of this model when upper and lower limit of distribution interval are equal.
关键词	Constitutive Model Strain Strength Distribution Fracture Plane Intact Factor Fracture Factor Combined Effect
学科领域	岩体力学和土力学
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收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000314008900009
项目资助者	China National Program on Key Basic Research Project (973 Program) [2010CB731500]
课题组名称	LMFS工程地质体力学(LEM)
论文分区	一类/力学重要期刊
引用统计	被引频次：10[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/311007/47011
专题	流固耦合系统力学重点实验室
通讯作者	Zhou, D (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Li SH,Zhou D,Zhou, D . Progressive failure constitutive model of fracture plane in geomaterial based on strain strength distribution[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,2013,50,3-4,:570-577.
APA	Li SH,Zhou D,&Zhou, D .(2013).Progressive failure constitutive model of fracture plane in geomaterial based on strain strength distribution.INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,50(3-4),570-577.
MLA	Li SH,et al."Progressive failure constitutive model of fracture plane in geomaterial based on strain strength distribution".INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 50.3-4(2013):570-577.

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