Study of the damage-induced anisotropy of quasi-brittle materials using the component assembling model

IMECH-IR > 力学所知识产出(1956-2008)

	Study of the damage-induced anisotropy of quasi-brittle materials using the component assembling model
	Zhang J(张晶); Liang NG(梁乃刚); Deng SC(邓守春); Liu JX(刘金兴); Liu XY(刘晓宇); Fu Q(付强); Zhang J
会议录名称	International Journal Of Damage Mechanics
	2008
页码	197-221
会议名称	7th World Congress on Computational Mechanics
会议日期	JUL 16-22, 2006
会议地点	Los Angeles, CA
摘要	Damage-induced anisotropy of quasi-brittle materials is investigated using component assembling model in this study. Damage-induced anisotropy is one significant character of quasi-brittle materials coupled with nonlinearity and strain softening. Formulation of such complicated phenomena is a difficult problem till now. The present model is based on the component assembling concept, where constitutive equations of materials are formed by means of assembling two kinds of components' response functions. These two kinds of components, orientational and volumetric ones, are abstracted based on pair-functional potentials and the Cauchy - Born rule. Moreover, macroscopic damage of quasi-brittle materials can be reflected by stiffness changing of orientational components, which represent grouped atomic bonds along discrete directions. Simultaneously, anisotropic characters are captured by the naturally directional property of the orientational component. Initial damage surface in the axial-shear stress space is calculated and analyzed. Furthermore, the anisotropic quasi-brittle damage behaviors of concrete under uniaxial, proportional, and nonproportional combined loading are analyzed to elucidate the utility and limitations of the present damage model. The numerical results show good agreement with the experimental data and predicted results of the classical anisotropic damage models.
关键词	Anisotropic Damage Quasi-brittle Materials Initial Damage Surface Uniaxial Tension Non-proportional Loading Component Assembling Model Continuum Mechanics Solids Microcracks Formulation Simulation Fracture Issues
WOS记录号	WOS:000255984800003
收录类别	CPCI-S ; EI
语种	英语
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/25438
专题	力学所知识产出(1956-2008)
通讯作者	Zhang J
推荐引用方式 GB/T 7714	Zhang J,Liang NG,Deng SC,et al. Study of the damage-induced anisotropy of quasi-brittle materials using the component assembling model[C]International Journal Of Damage Mechanics,2008:197-221.

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