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Localization of deformation and its effects on power-law singularity preceding catastrophic rupture in rocks

文献类型：期刊论文

作者Xue J(薛健)2; Hao SW(郝圣旺)1,2; Yang R(杨荣)2; Wang P1; Bai YL(白以龙)2
刊名INTERNATIONAL JOURNAL OF DAMAGE MECHANICS
出版日期2020
卷号29期号:1页码:86-102
关键词Localization power-law singularity trans-scale characteristic catastrophic rupture prediction
ISSN号1056-7895
DOI10.1177/1056789519857121
通讯作者Bai, Yilong(baiyl@lnm.imech.ac.cn)
英文摘要Three distinct length scales are involved in the deformation evolution and catastrophic rupture of heterogeneous rocks in general: two essential ones are the specimen size macroscopically and the grain size at micro-scale respectively, the other is the emerging localized band of deformation and damage. The band initiates almost nearby the peak load, and the rupture eventually occurs afterwards within the localized band. In this paper, we report that with the evolution of concentrated high strain and damage in the localized band, a power-law singularity emerges within the localized band preceding the eventual rupture. The localization of deformation imposes a spatial non-uniqueness on the power-law singularity, and then leads to a trans-scale characteristic of the power-law singularity. Based on this characteristic, it is demonstrated that the singularity presented by the global response of a whole specimen comes from the singularity of local response in the localized band. The localization and the power-law singularity are associated precursory events, spatially and temporally, respectively, before macroscopic rupture. In particular, based on the power-law singularity exhibited in the zonal areas near or across the rupture surface, a prediction of the occurrence time of catastrophic rupture can be made accordingly. This provides a practically helpful approach to the prediction of rupture, merely by means of monitoring the zonal areas adjacent to the localized band.
分类号二类
WOS关键词DAMAGE LOCALIZATION ; STRAIN LOCALIZATION ; FAILURE ; ERUPTION ; PREDICTION ; EVOLUTION ; VOLCANO ; EARTHQUAKES ; PRECURSOR ; FRACTURE
WOS研究方向Materials Science ; Mechanics
语种英语
WOS记录号WOS:000504186800006
其他责任者Bai, Yilong
源URL[http://dspace.imech.ac.cn/handle/311007/81280]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Yanshan Univ, Sch Civil Engn & Mech, Qinhuangdao, Hebei, Peoples R China
2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing, Peoples R China;
推荐引用方式
GB/T 7714		 Xue J,Hao SW,Yang R,et al. Localization of deformation and its effects on power-law singularity preceding catastrophic rupture in rocks[J]. INTERNATIONAL JOURNAL OF DAMAGE MECHANICS,2020,29(1):86-102.
APA 薛健,郝圣旺,杨荣,Wang P,&白以龙.(2020).Localization of deformation and its effects on power-law singularity preceding catastrophic rupture in rocks.INTERNATIONAL JOURNAL OF DAMAGE MECHANICS,29(1),86-102.
MLA 薛健,et al."Localization of deformation and its effects on power-law singularity preceding catastrophic rupture in rocks".INTERNATIONAL JOURNAL OF DAMAGE MECHANICS 29.1(2020):86-102.

入库方式： OAI收割

来源：力学研究所

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