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Localization of deformation and its effects on power-law singularity preceding catastrophic rupture in rocks
Xue J(薛健)1; Hao SW(郝圣旺)1,2; Yang R(杨荣)1; Wang P2; Bai YL(白以龙)1
Corresponding AuthorBai, Yilong(baiyl@lnm.imech.ac.cn)
Source PublicationINTERNATIONAL JOURNAL OF DAMAGE MECHANICS
2020
Volume29Issue:1Pages:86-102
ISSN1056-7895
AbstractThree 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.
KeywordLocalization power-law singularity trans-scale characteristic catastrophic rupture prediction
DOI10.1177/1056789519857121
Indexed BySCI ; EI
Language英语
WOS IDWOS:000504186800006
WOS KeywordDAMAGE LOCALIZATION ; STRAIN LOCALIZATION ; FAILURE ; ERUPTION ; PREDICTION ; EVOLUTION ; VOLCANO ; EARTHQUAKES ; PRECURSOR ; FRACTURE
WOS Research AreaMaterials Science ; Mechanics
WOS SubjectMaterials Science, Multidisciplinary ; Mechanics
Classification二类
Ranking1
ContributorBai, Yilong
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/81281
Collection非线性力学国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing, Peoples R China;
2.Yanshan Univ, Sch Civil Engn & Mech, Qinhuangdao, Hebei, Peoples R China
Recommended Citation
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.
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