Orientational evolution of plastic orthotropy in sheet metals

Dafalias, YF

dc.contributor.author	Dafalias, YF	en
dc.date.accessioned	2014-03-01T01:50:06Z
dc.date.available	2014-03-01T01:50:06Z
dc.date.issued	2000	en
dc.identifier.issn	0022-5096	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/25995
dc.subject	plastic deformation	en
dc.subject	anisotropic material	en
dc.subject	constitutive behavior	en
dc.subject	finite strain	en
dc.subject	metallic materials	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Mechanics	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	LARGE INELASTIC DEFORMATIONS	en
dc.subject.other	FINITE-DEFORMATION	en
dc.subject.other	POLYCRYSTAL PLASTICITY	en
dc.subject.other	TEXTURE DEVELOPMENT	en
dc.subject.other	SLIP MODEL	en
dc.subject.other	SPIN	en
dc.subject.other	ANISOTROPY	en
dc.subject.other	REPRESENTATIONS	en
dc.subject.other	LOCALIZATION	en
dc.subject.other	DERIVATION	en
dc.title	Orientational evolution of plastic orthotropy in sheet metals	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2000	en
heal.abstract	Recent experimental findings show that when orthotropic sheet metal samples are subjected to uniaxial tensile loading at an angle to the orthotropic axes, a drastic re-orientation of the axes takes place at moderate tensile strain levels, while orthotropic symmetries are preserved. This phenomenon is explained and simulated within a simple theory of plasticity, which combines Hill's quadratic yield criterion for orthotropy with the concept of plastic spin as a necessary constitutive ingredient for the orientational evolution of anisotropic tensorial internal variables. Detailed analytical investigation, corroborated by the experimental data, shows a trend of anisotropic axes rotation towards alignment of a pertinent minimum yield stress with the stretching direction. This-imposes a constitutive coupling relation between the anisotropic parameters and the plastic spin coefficient. Similarities and differences with other works as well as unresolved questions are discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS	en
dc.identifier.isi	ISI:000089246300001	en
dc.identifier.volume	48	en
dc.identifier.issue	11	en
dc.identifier.spage	2231	en
dc.identifier.epage	2255	en