000014866 001__ 14866
000014866 005__ 20161115100204.0
000014866 04107 $$aeng
000014866 046__ $$k2016-08-21
000014866 100__ $$aShao, Jianfu
000014866 24500 $$aA micro-macro mechanical model for porous rock-like materials with a pressure-sensitive matrix

000014866 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014866 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014866 506__ $$arestricted
000014866 520__ $$2eng$$aIn this work, a micro-macro mechanical model is proposed to describe elastic-plastic behaviors of porous geomaterials. The studied material is considered as a porous medium composed of a solid matrix and spherical pores. The solid matrix exhibits a pressure-dependent plastic behavior which is described by an associated plastic model based on a Mises-Schleicher yield criterion. A macroscopic yield criterion is firstly presented, explicitly taking into account effects of porosity. With an appropriate plastic hardening law, the micro-mechanical model is then formulated and implemented in a finite element code. The proposed model is then applied to describe mechanical behaviors of two representative porous rocks, sandstone and chalk.

000014866 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014866 653__ $$a

000014866 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014866 720__ $$aShao, Jianfu
000014866 8560_ $$ffischerc@itam.cas.cz
000014866 8564_ $$s201222$$uhttp://invenio.itam.cas.cz/record/14866/files/TS.FS05-3.04.pdf$$yOriginal version of the author's contribution as presented on CD,  page 3204, code TS.FS05-3.04
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000014866 962__ $$r13812
000014866 980__ $$aPAPER