The influence of crack-orientation distribution on the mechanical properties of pre-cracked brittle media
文献类型：期刊论文
| 作者 | Zeng, XG; Wei YJ(魏宇杰); Wei YJ(魏宇杰)
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| 刊名 | INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
 |
| 出版日期 | 2016 |
| 卷号 | 96页码:64-73 |
| 通讯作者邮箱 | yujie_wei@lnm.imech.ac.cn |
| 关键词 | Pre-cracked media Crack distribution Extended finite element method (XFEM) Elastic properties Strength |
| ISSN号 | 0020-7683 |
| 产权排序 | [Zeng, Xiaguang; Wei, Yujie] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China |
| 通讯作者 | Wei, YJ (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China. |
| 中文摘要 | Cracks in kerogen-rich shales and other brittle rock-like materials have a tremendous impact on their elastic properties and strength. In this paper, we investigate the effective mechanical properties of shale plates with pre-existing cracks. We employ the extended finite element method (XFEM) to investigate a pre-cracked medium with an elastic, isotropic and brittle shale matrix. We show how the mechanical properties of the orthotropic shale plates are dependent on the crack density and the standard deviation of crack angles. Both the Young's modulus and the Poisson's ratio of the cracked media exhibit a linear dependence on the standard deviation of crack angles, in contrast to the nonlinear dependence of the strength on the angle deviation. Finally, we propose mechanical models to capture the relationship between the mechanical properties and the distribution characteristics of pre-existing cracks in shales. These phenomenological models could be applied to estimate the fracking behavior of shales in engineering practice. (C) 2016 Elsevier Ltd. All rights reserved. |
| 分类号 | 二类 |
| 类目[WOS] | Mechanics |
| 研究领域[WOS] | Mechanics |
| 关键词[WOS] | Pre-cracked media ; Crack distribution ; Extended finite element method (XFEM) ; Elastic properties ; Strength |
| 收录类别 | SCI ; EI |
| 原文出处 | http://dx.doi.org/10.1016/j.ijsolstr.2016.06.022 |
| 语种 | 英语 |
| WOS记录号 | WOS:000381324700006 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/59740]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zeng, XG,Wei YJ,Wei YJ. The influence of crack-orientation distribution on the mechanical properties of pre-cracked brittle media[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,2016,96:64-73. |
| APA | Zeng, XG,魏宇杰,&Wei YJ.(2016).The influence of crack-orientation distribution on the mechanical properties of pre-cracked brittle media.INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,96,64-73. |
| MLA | Zeng, XG,et al."The influence of crack-orientation distribution on the mechanical properties of pre-cracked brittle media".INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 96(2016):64-73. |
入库方式： OAI收割
来源：力学研究所
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