Evolution of Localized Damage Zone in Heterogeneous Media
文献类型：期刊论文
| 作者 | Hao SW ; Xia MF(夏蒙棼); Ke FJ(柯孚久); Bai YL(白以龙); Bai YL
|
| 刊名 | International Journal of Damage Mechanics
 |
| 出版日期 | 2010 |
| 卷号 | 19期号:7页码:787-804 |
| 通讯作者邮箱 | baiyl@lnm.imech.ac.cn |
| 关键词 | Localized Zone Catastrophic Rupture Heterogeneous Material Strain Localization Deformation Granite Bands |
| ISSN号 | 1056-7895 |
| 通讯作者 | Bai YL |
| 合作状况 | 国内 |
| 中文摘要 | Evolution of localized damage zone is a key to catastrophic rupture in heterogeneous materials. In the present article, the evolutions of strain fields of rock specimens are investigated experimentally. The observed evolution of fluctuations and autocorrelations of strain fields under uniaxial compression demonstrates that the localization of deformation always appears ahead of catastrophic rupture. In particular, the localization evolves pronouncedly with increasing deformation in the rock experiments. By means of the definition of the zone with high strain rate and likely damage localization, it is found that the size of the localized zone decreases from the sample size at peak load to an eventual value. Actually, the deformation field beyond peak load is bound to suffer bifurcation, namely an elastic unloading part and a continuing but localized damage part will co-exist in series in a specimen. To describe this continuous bifurcation and localization process observed in experiments, a model on continuum mechanics is developed. The model can explain why the decreasing width of localized zone can lead stable deformation to unstable, but it still has not provided the complete equations governing the evolution of the localized zone. |
| 类目[WOS] | Materials Science, Multidisciplinary ; Mechanics |
| 研究领域[WOS] | Materials Science ; Mechanics |
| 关键词[WOS] | STRAIN LOCALIZATION ; DEFORMATION ; GRANITE ; BANDS |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [90715001, 10721202, 10572139, 10972218, 10802073]; National Basic Research Program of China [2007CB814800]; CAS |
| 原文出处 | http://ijd.sagepub.com/content/early/2010/03/09/1056789509359660.abstract?patientinform-links=yes&legid=spijd;1056789509359660v1 |
| 语种 | 英语 |
| WOS记录号 | WOS:000281245000003 |
| 公开日期 | 2011-03-01 ; 2011-03-30 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/43475]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Bai YL |
| 推荐引用方式 GB/T 7714 | Hao SW,Xia MF,Ke FJ,et al. Evolution of Localized Damage Zone in Heterogeneous Media[J]. International Journal of Damage Mechanics,2010,19(7):787-804. |
| APA | Hao SW,夏蒙棼,柯孚久,白以龙,&Bai YL.(2010).Evolution of Localized Damage Zone in Heterogeneous Media.International Journal of Damage Mechanics,19(7),787-804. |
| MLA | Hao SW,et al."Evolution of Localized Damage Zone in Heterogeneous Media".International Journal of Damage Mechanics 19.7(2010):787-804. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。