TRUE TRIAXIAL YIELDING AND HARDENING OF ROCK.

Michelis, Paul

dc.contributor.author	Michelis, Paul	en
dc.date.accessioned	2014-03-01T01:07:01Z
dc.date.available	2014-03-01T01:07:01Z
dc.date.issued	1987	en
dc.identifier.issn	0733-9410	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9751
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0023367088&partnerID=40&md5=fe61876509c748cff0b5f06383d488d5	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	MATERIALS - Hardening	en
dc.subject.other	ROCK MECHANICS	en
dc.subject.other	STRESSES - Strain	en
dc.subject.other	TRIAXIAL YIELDING	en
dc.subject.other	ROCK	en
dc.title	TRUE TRIAXIAL YIELDING AND HARDENING OF ROCK.	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1987	en
heal.abstract	Analysis of test results for intact and granulated marbles (cemented and noncemented granular materials) adds to the indications that strain softening does not express a real material behavior; it highlights similarities in stress-strain relations and confirms equality of a stress and a plastic strain invariant. The physical meaning of the parameters of a yield equation, which express energy dissipating in frictional and nonfrictional processes and define the deviation from the normality condition, is shown. A hardening rule that takes into account friction and dilatancy is formulated from yield relations and from an experimentally proved consistency condition. Meridian and deviatoric sections of yield surfaces, obtained by low and high pressure experiments and substantiated by results compiled from the literature, are considered. A polyaxial yield equation and hardening rule are proposed and experimentally verified.	en
heal.publisher	ASCE-AMER SOC CIVIL ENGINEERS	en
heal.journalName	Journal of geotechnical engineering	en
dc.identifier.isi	ISI:A1987H428000005	en
dc.identifier.volume	113	en
dc.identifier.issue	6	en
dc.identifier.spage	616	en
dc.identifier.epage	635	en