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. | |
会议录名称 | MESOMECHANICS 2009 |
2009 | |
会议名称 | Mesomechanics 2009 Conference |
会议日期 | JUN 24-26, 2009 |
会议地点 | Oxford, ENGLAND |
摘要 | 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记录号 | WOS:000275988600030 |
URL | 查看原文 |
收录类别 | CPCI-S ; EI |
语种 | 英语 |
引用统计 | |
文献类型 | 会议论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/58882 |
专题 | 非线性力学国家重点实验室 |
通讯作者 | Bai, YL (reprint author), CAS, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
推荐引用方式 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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