The plastic spin in viscoplasticity

Dafalias, YF

dc.contributor.author	Dafalias, YF	en
dc.date.accessioned	2014-03-01T01:08:11Z
dc.date.available	2014-03-01T01:08:11Z
dc.date.issued	1990	en
dc.identifier.issn	0020-7683	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10320
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0024985962&partnerID=40&md5=06dee70e67e08c8094516dcaa0bcd2bb	en
dc.subject.classification	Mechanics	en
dc.subject.other	Kinematics	en
dc.subject.other	Kinetics	en
dc.subject.other	Stresses--Shear	en
dc.subject.other	Elastothermoviscoplastic Material	en
dc.subject.other	Isotropic/Kinematic Hardening	en
dc.subject.other	Plastic Spin	en
dc.subject.other	Viscoplasticity	en
dc.title	The plastic spin in viscoplasticity	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1990	en
heal.abstract	The importance of the role of plastic spin in the rate-dependent response of materials at large deformations is the main objective of this work. After a brief presentation of a general constitutive framework for viscoplasticity at large strains, an isotropic/kinematic hardening and an orthotropic viscoplastic model are used to analyze the stress-strain response under simple shear and biaxial loading at different rates. A clear understanding of the role of plastic spin is achieved by obtaining closed-form analytical expressions for different stress values, in which the plastic spin constitutive parameters interrelate with the strain rate and other more conventional model constants. Such analytical expressions allow for a direct evaluation of the capabilities of the models to account for large deformations and rate dependence as exhibited by available experimental data, and provide guidance towards the proper choice of constitutive parameters. © 1990.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	International Journal of Solids and Structures	en
dc.identifier.isi	ISI:A1990CX47800002	en
dc.identifier.volume	26	en
dc.identifier.issue	2	en
dc.identifier.spage	149	en
dc.identifier.epage	163	en