000009227 001__ 9227
000009227 005__ 20141204092420.0
000009227 04107 $$aeng
000009227 046__ $$k12/05/2014
000009227 100__ $$aHorák, M.
000009227 24500 $$aComparison of implicit-gradient damage-plastic models

000009227 24630 $$n18.$$pEngineering Mechanics 2012
000009227 260__ $$bInstitute of Theoretical and Applied Mechanics, AS CR, Prague
000009227 506__ $$arestricted
000009227 520__ $$2eng$$aDamage mechanics coupled with the theory of plasticity is a suitable framework for description of the complex behavior of materials such as concrete, steel, or bone. However, the classical theory fails after the loss of ellipticity of the governing differential equation. From the numerical point of view, loss of ellipticity is manifested by the pathological dependence of the results on the size and orientation of the finite elements. This paper describes two different formulations of coupled damage-plastic models, and their nonlocal enhancements based on the implicit gradient approach. The difference between the formulations is discussed and illustrated by a numerical example.

000009227 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009227 653__ $$adamage, plasticity, nonlocal continuum, implicit-gradient formulation

000009227 7112_ $$aEngineering Mechanics 2012$$cSvratka (CZ)$$d12/05/2014 - 15/05/2014$$gEM2012
000009227 720__ $$aHorák, M.$$iJirásek, M.
000009227 8560_ $$ffischerc@itam.cas.cz
000009227 8564_ $$s225390$$uhttps://invenio.itam.cas.cz/record/9227/files/185_Horak_M-FT.pdf$$yOriginal version of the author's contribution as presented on CD, paper (No. 185).
000009227 962__ $$r8924
000009227 980__ $$aPAPER