000015358 001__ 15358
000015358 005__ 20161115100219.0
000015358 04107 $$aeng
000015358 046__ $$k2016-08-21
000015358 100__ $$aReddy, Daya
000015358 24500 $$aSome features of dissipative theories of strain-gradient plasticity

000015358 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000015358 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000015358 506__ $$arestricted
000015358 520__ $$2eng$$aA critical investigation is carried out of a strain-gradient plasticity theory. The theory is dissipative in nature, in the sense that the plastic strain-gradient terms and associated length scale enter through the flow relation, rather than through the free energy. It is shown that the yield condition and flow relation take a global form, in contrast to conventional theories in which these are posed locally, that is, pointwise in the domain. Recent studies of particular examples of non-proportional loading have highlighted interesting and novel features of dissipative strain-gradient theories. These features, such as a delayed resumption of plastic loading following non-proportional increments in loading, are explored further computationally, and the behaviour thus obtained is studied with a view to relating it to the specific features of the flow relation in the dissipative theory.

000015358 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015358 653__ $$a

000015358 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000015358 720__ $$aReddy, Daya
000015358 8560_ $$ffischerc@itam.cas.cz
000015358 8564_ $$s44436$$uhttps://invenio.itam.cas.cz/record/15358/files/TS.SM10-4.03.pdf$$yOriginal version of the author's contribution as presented on CD,  page 2500, code TS.SM10-4.03
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000015358 962__ $$r13812
000015358 980__ $$aPAPER