On the microscopic origin of the plastic spin

Dafalias, YF; Aifantis, EC

dc.contributor.author	Dafalias, YF	en
dc.contributor.author	Aifantis, EC	en
dc.date.accessioned	2014-03-01T01:08:05Z
dc.date.available	2014-03-01T01:08:05Z
dc.date.issued	1990	en
dc.identifier.issn	0001-5970	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10268
dc.subject.classification	Mechanics	en
dc.subject.other	Mechanics	en
dc.subject.other	Microscopic Examination	en
dc.subject.other	Strain	en
dc.subject.other	Stresses	en
dc.subject.other	Viscoplasticity	en
dc.subject.other	Back-Stress	en
dc.subject.other	Macroscopic Scale	en
dc.subject.other	Microscopic Scale	en
dc.subject.other	Microstructures	en
dc.subject.other	Plastic Spin	en
dc.subject.other	Single Slip Mechanism	en
dc.subject.other	Plasticity	en
dc.title	On the microscopic origin of the plastic spin	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/BF01173738	en
heal.identifier.secondary	http://dx.doi.org/10.1007/BF01173738	en
heal.language	English	en
heal.publicationDate	1990	en
heal.abstract	Considering the configuration of a single slip and employing a scale invariance argument, it is possible to deduce a set of ""microscopic"" plastic flow relations having a direct counterpart in the ""macroscopic"" formulation of plasticity and viscoplasticity. In particular, a microscopic form of the plastic spin and its macroscopic counterpart for the case of anisotropy induced by kinematic hardening are obtained in terms of elementary physical arguments. Moreover the evolution equation for the back-stress is rigorously derived. Parameters which were assumed to be constant and/or independent from each other in a macroscopic development, are now found to be interrelated and dependent on the accumulated plastic strain. These findings are used for the analysis of the simple shear problem, especially in evaluating the development of the axial stress normal to the shear plane. A preliminary qualitative comparison with available data from fixed-end torsion experiments is discussed. © 1990 Springer-Verlag.	en
heal.publisher	Springer-Verlag	en
heal.journalName	Acta Mechanica	en
dc.identifier.doi	10.1007/BF01173738	en
dc.identifier.isi	ISI:A1990DQ44700004	en
dc.identifier.volume	82	en
dc.identifier.issue	1-2	en
dc.identifier.spage	31	en
dc.identifier.epage	48	en