A discrete approach for anisotropic plasticity and damage in semi-brittle rocks

doi:10.1016/j.compgeo.2010.04.004

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	A discrete approach for anisotropic plasticity and damage in semi-brittle rocks
	Shao, J. F.1; Zhou, H.2; Zhu, Q. Z.1; Hu, D. W.1,2
刊名	COMPUTERS AND GEOTECHNICS
	2010
卷号	37 期号:5 页码:658-666
关键词	Damage Plasticity Microcracks Induced anisotropy Rocks Geomaterials
ISSN号	0266-352X
DOI	10.1016/j.compgeo.2010.04.004
英文摘要	In this paper, we propose an anisotropic plastic damage model for semi-brittle geomaterials based on a discrete thermodynamic approach. The macroscopic plastic deformation is generated by frictional sliding of weakness planes. The evolution of damage is related to growth of such weakness planes. The local frictional sliding in each family of weakness planes is described by a non-associated plastic model taking into account material softening and volumetric dilatancy. The damage evolution is coupled with plastic deformation and modelled by an isotropic damage criterion. The proposed model is applied to modelling mechanical responses of typical sandstone under different loading paths. There is good agreement between numerical predictions and experimental data. Further, the anisotropic distributions of plastic deformation and induced damage are analysed and discussed. (C) 2010 Elsevier Ltd. All rights reserved.
WOS研究方向	Computer Science ; Engineering ; Geology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000280031600008
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3234]
专题	岩土力学所知识全产出_期刊论文
作者单位	1.USTL, Lab Mech Lille; 2.Chinese Acad Sci, Inst Rock & Soil Mech
推荐引用方式 GB/T 7714	Shao, J. F.,Zhou, H.,Zhu, Q. Z.,et al. A discrete approach for anisotropic plasticity and damage in semi-brittle rocks[J]. COMPUTERS AND GEOTECHNICS,2010,37(5):658-666.
APA	Shao, J. F.,Zhou, H.,Zhu, Q. Z.,&Hu, D. W..(2010).A discrete approach for anisotropic plasticity and damage in semi-brittle rocks.COMPUTERS AND GEOTECHNICS,37(5),658-666.
MLA	Shao, J. F.,et al."A discrete approach for anisotropic plasticity and damage in semi-brittle rocks".COMPUTERS AND GEOTECHNICS 37.5(2010):658-666.