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Article: Damage evolution of uniaxially compressed Hong Kong granite

TitleDamage evolution of uniaxially compressed Hong Kong granite
Authors
KeywordsDamage degree
Hong Kong granite
Numerical simulation
Rock mechanics
Issue Date2003
Citation
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal Of Rock Mechanics And Engineering, 2003, v. 22 n. 12, p. 2019-2027 How to Cite?
AbstractAn investigation is reported on the characteristics of progressive failure of Hong Kong granite. Uniaxial compression tests are performed on a number of Hong Kong granite specimens with the MTS 815.04 testing machine. Acoustic emission signals are recorded to trace the evolution of damages. Parametric studies on the effect of grain size are attempted. The results show that the increase in grain size will reduce the brittleness during failure. In addition, discussion is extended to the grain size effect on the stress thresholds of crack closure, crack initiation and crack damage. The RFPA2D code is also used to observe the failure characteristics of brittle rocks such as granite. Microscopic tensile failure is dominant in the ultimate failure of all the uniaxially compressed models. The crack initiation threshold is also determined by the numerical approach. The failure of coarse-grained models seems more ductile.
Persistent Identifierhttp://hdl.handle.net/10722/71629
ISSN
2015 SCImago Journal Rankings: 1.073
References

 

DC FieldValueLanguage
dc.contributor.authorYu, Fen_HK
dc.contributor.authorTham, LGen_HK
dc.contributor.authorLee, PKKen_HK
dc.date.accessioned2010-09-06T06:33:43Z-
dc.date.available2010-09-06T06:33:43Z-
dc.date.issued2003en_HK
dc.identifier.citationYanshilixue Yu Gongcheng Xuebao/Chinese Journal Of Rock Mechanics And Engineering, 2003, v. 22 n. 12, p. 2019-2027en_HK
dc.identifier.issn1000-6915en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71629-
dc.description.abstractAn investigation is reported on the characteristics of progressive failure of Hong Kong granite. Uniaxial compression tests are performed on a number of Hong Kong granite specimens with the MTS 815.04 testing machine. Acoustic emission signals are recorded to trace the evolution of damages. Parametric studies on the effect of grain size are attempted. The results show that the increase in grain size will reduce the brittleness during failure. In addition, discussion is extended to the grain size effect on the stress thresholds of crack closure, crack initiation and crack damage. The RFPA2D code is also used to observe the failure characteristics of brittle rocks such as granite. Microscopic tensile failure is dominant in the ultimate failure of all the uniaxially compressed models. The crack initiation threshold is also determined by the numerical approach. The failure of coarse-grained models seems more ductile.en_HK
dc.languageengen_HK
dc.relation.ispartofYanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineeringen_HK
dc.subjectDamage degreeen_HK
dc.subjectHong Kong graniteen_HK
dc.subjectNumerical simulationen_HK
dc.subjectRock mechanicsen_HK
dc.titleDamage evolution of uniaxially compressed Hong Kong graniteen_HK
dc.typeArticleen_HK
dc.identifier.emailTham, LG:hrectlg@hkucc.hku.hken_HK
dc.identifier.emailLee, PKK:hreclkk@hkucc.hku.hken_HK
dc.identifier.authorityTham, LG=rp00176en_HK
dc.identifier.authorityLee, PKK=rp00141en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-1942521331en_HK
dc.identifier.hkuros93014en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-1942521331&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume22en_HK
dc.identifier.issue12en_HK
dc.identifier.spage2019en_HK
dc.identifier.epage2027en_HK
dc.publisher.placeChinaen_HK
dc.identifier.scopusauthoridYu, F=22936179800en_HK
dc.identifier.scopusauthoridTham, LG=7006213628en_HK
dc.identifier.scopusauthoridLee, PKK=24522826500en_HK

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