| Power law singularity of catastrophic rupture in heterogeneous media | |
Hao SW(郝圣旺) ; Lu MF; Ke FJ(柯孚久); Xia MF(夏蒙芬); Bai YL(白以龙); Bai, YL (reprint author), CAS, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
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| Source Publication | MESOMECHANICS 2009 |
| 2009 | |
| Conference Name | Mesomechanics 2009 Conference |
| Conference Date | JUN 24-26, 2009 |
| Conference Place | Oxford, ENGLAND |
| Abstract | Catastrophic rupture in heterogeneous media, such as earthquake in crust, has long been a topic of scientific and societal importance. However, there has been no reliable approach to its prediction. Recently, our experimental study of rocks unveiled a power law singularity ahead of catastrophic rupture, namely the response of the rock specimen R (the ratio of the increments of sample deformation u and controlling crosshead displacement U) can be expressed as R similar to (1-U/U(F)) (-beta) with beta = 0.51+/-0.10 (mean+/-s.d.) ahead of the catastrophic rupture U(F). Numerical simulations also demonstrate the power law singularity ahead of catastrophic rupture. Theoretical analysis gives the power law singularity with the critical exponent beta = 1/2. In addition, other tests with cement specimens showing gradual failure without catastrophic rupture do not demonstrate such a singularity. (C) 2009 Elsevier B.V. All rights reserved |
| WOS ID | WOS:000275988600030 |
| URL | 查看原文 |
| Indexed By | CPCI-S ; EI |
| Language | 英语 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/58882 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Bai, YL (reprint author), CAS, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| Recommended Citation GB/T 7714 | Hao SW,Lu MF,Ke FJ,et al. Power law singularity of catastrophic rupture in heterogeneous media[C]MESOMECHANICS 2009,2009. |
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| CPCI-Add031.pdf（413KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Download | ||
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