An approach to determining the thicknesses of shear bands with an echelon-crack structure
文献类型：期刊论文
| 作者 | Wang, G. S.; Kong, L. W.; Wei, C. F. |
| 刊名 | INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
 |
| 出版日期 | 2013 |
| 卷号 | 37期号:6页码:618-640 |
| 关键词 | shear band thickness echelon crack geomaterial |
| ISSN号 | 0363-9061 |
| DOI | 10.1002/nag.1114 |
| 英文摘要 | In this paper, the internal structure of shear band is investigated, and a model of the shear band with an echelon crack structure is developed. The model assumes the shear band to be composed of two conjugate sets of echelon cracks, such that the smaller echelon cracks are embedded in the space of the larger ones. The additional strain induced by the echelon cracks and the anisotropic development of the compliance tensor in the shear band zone are analyzed. The critical crack density at the onset of shear band is obtained by applying the bifurcation condition. Deviating from previous approaches, the new procedure evaluates the thickness of shear band based on the geometrical characteristics of echelon crack arrays and the failure probability of grain boundaries in the longitudinal direction at the onset of shear band. Parametric analysis shows that grain size, internal friction angle, dilation angle, and failure probability of grain boundaries are the dominant factors that account for the shear band thickness. The calculated results are consistent with the experimental data available in the literature. The model soundly explains that the measurements of the shear band thickness are generally scattered, ranging from 4 to 30 (or even more) times the grain size. Copyright (c) 2011 John Wiley & Sons, Ltd. |
| WOS研究方向 | Engineering ; Materials Science ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000317364400004 |
| 出版者 | WILEY-BLACKWELL |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3442]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Wang, G. S.,Kong, L. W.,Wei, C. F.. An approach to determining the thicknesses of shear bands with an echelon-crack structure[J]. INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS,2013,37(6):618-640. |
| APA | Wang, G. S.,Kong, L. W.,&Wei, C. F..(2013).An approach to determining the thicknesses of shear bands with an echelon-crack structure.INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS,37(6),618-640. |
| MLA | Wang, G. S.,et al."An approach to determining the thicknesses of shear bands with an echelon-crack structure".INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS 37.6(2013):618-640. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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