Prediction of shear bands in sand based on granular flow model and two-phase equilibrium

	Prediction of shear bands in sand based on granular flow model and two-phase equilibrium
	Yitong Zhang ; Dexuan Qi ; Ruxu Du ; Shuguang Ren
刊名	JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY
	2008
卷号	15 页码:316-321
英文摘要	In contrast to the traditional interpretation of shear bands in sand as a bifurcation problem in continuum mechanics, shear bands in sand are considered as high-strain phase (plastic phase) of sand and the materials outside the bands are still in low-strain phase (elastic phase), namely, the two phases ofsand can coexist under certain condition. As a one-dimensional example, the results show that, for materials with strain-softening behavior, the two-phase solution is a stable branch of solutions, but the method to find two-phase solutions is very different from the one for bifurcation analysis. The theory of multi-phase equilibrium and the slow plastic flow model are applied to predict the formation and patterns of shear bands in sand specimens, discontinuity of deformation gradient and stress across interfaces between shear bands and other regions is considered, the continuity of displacements and traction across interfaces is imposed, and the Maxwell relation is satisfied. The governing equations are deduced. The critical stress for the formation of a shear band, both the stresses and strains inside the band and outside the band, and the inclination angle of the band can all be predicted. The predicted results are consistent with experimental measurements.
收录类别	SCI
原文出处	http://link.springer.com/article/10.1007/s11771-008-0371-6
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/2150]
专题	深圳先进技术研究院_集成所
推荐引用方式 GB/T 7714	Yitong Zhang,Dexuan Qi,Ruxu Du,et al. Prediction of shear bands in sand based on granular flow model and two-phase equilibrium[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY,2008,15:316-321.
APA	Yitong Zhang,Dexuan Qi,Ruxu Du,&Shuguang Ren.(2008).Prediction of shear bands in sand based on granular flow model and two-phase equilibrium.JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY,15,316-321.
MLA	Yitong Zhang,et al."Prediction of shear bands in sand based on granular flow model and two-phase equilibrium".JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY 15(2008):316-321.