Calcul à la rupture en présence d'un écoulement : formulation cinématique avec un champ de pression approchéYield design formulation for porous media subjected to flow,using approximate pressure field |
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Authors: | Alain Corfdir |
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Institution: | CERMES, ENPC-LCPC, institut Navier, 6 et 8, avenue Blaise Pascal, cité Descartes, Champs sur Marne, 77455 Marne-la-Vallée cedex 2, France |
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Abstract: | We attempt here to use the kinematic method of yield design in the case of a porous medium subjected to flow (with or without free surface), without looking for the exact solution of the pressure field. The method proposed here is based on the use of approximate pressure fields. In this paper, we show how, under different conditions concerning the yield criterion and the velocity field, the use of such approximate fields allows one to obtain a necessary condition for stability without having to find the real pressure field. To cite this article: A. Corfdir, C. R. Mecanique 334 (2006). |
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Keywords: | Milieux poreux Calcul à la rupture Analyse limite Frontière libre Borne supérieure Porous media Yield design Limit analysis Free boundary Upper bound |
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