NUMERICAL TREATMENT OF PROGRESSIVE LOCALIZATION IN RELATION TO BOREHOLE STABILITY

PAPANASTASIOU, PC; VARDOULAKIS, IG

dc.contributor.author	PAPANASTASIOU, PC	en
dc.contributor.author	VARDOULAKIS, IG	en
dc.date.accessioned	2014-03-01T01:08:57Z
dc.date.available	2014-03-01T01:08:57Z
dc.date.issued	1992	en
dc.identifier.issn	0363-9061	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10754
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Mechanics	en
dc.subject.other	BIFURCATION-ANALYSIS	en
dc.subject.other	GRANULAR-MATERIALS	en
dc.subject.other	CONTINUUM THEORY	en
dc.subject.other	DEEP BOREHOLES	en
dc.subject.other	SHEAR BANDS	en
dc.subject.other	DEFORMATION	en
dc.subject.other	ROCK	en
dc.subject.other	LIQUEFACTION	en
dc.subject.other	MODELS	en
dc.title	NUMERICAL TREATMENT OF PROGRESSIVE LOCALIZATION IN RELATION TO BOREHOLE STABILITY	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/nag.1610160602	en
heal.identifier.secondary	http://dx.doi.org/10.1002/nag.1610160602	en
heal.language	English	en
heal.publicationDate	1992	en
heal.abstract	Results of large-scale finite element computations are presented for the problem of borehole failure due to the high stresses at great depths. Rock is modelled by an extension of the Mohr-Coulomb flow theory of plasticity for material with Cosserat micro-structure. The introduction of internal length (grain size) improves the computational stability and allows for robust post-localization computations. The presented results show clearly a progressive failure mechanism and the computed failure modes are in a good qualitative agreement with laboratory and field observations.	en
heal.publisher	JOHN WILEY & SONS LTD	en
heal.journalName	INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS	en
dc.identifier.doi	10.1002/nag.1610160602	en
dc.identifier.isi	ISI:A1992HZ41900001	en
dc.identifier.volume	16	en
dc.identifier.issue	6	en
dc.identifier.spage	389	en
dc.identifier.epage	424	en