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Modeling triaxial test on intact rock using discrete element method with membrane boundary / Wang, Yuannian in Journal of engineering mechanics, Vol. 135 N° 9 (Septembre 2009) 

Public ISBD [article]  in Journal of engineering mechanics > Vol. 135 N° 9 (Septembre 2009) . - pp. 1029-1037 Titre : Modeling triaxial test on intact rock using discrete element method with membrane boundary Type de document : texte imprimé Auteurs : Wang, Yuannian, Auteur ; Tonon, Fulvio, Auteur Article en page(s) : pp. 1029-1037 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Membranes  Discrete  elements  Boundaries  Triaxial  tests  Rocks. Résumé : A new membrane boundary that applies realistic fluid confining pressure has been developed for modeling triaxial tests on intact rock by using the discrete element method. To realistically simulate the confining pressure, the new approach applies updated boundary force rather than a “wall” boundary. The applied forces only act on the boundary particles, which are identified and updated periodically. Comparisons between rigid-wall boundary and membrane boundary show that rigid-wall boundary can significantly alter the material response especially the material strength. The effect of confining pressures on the simulated results of triaxial tests is also investigated. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&smode=strres [...] [article] Modeling triaxial test on intact rock using discrete element method with membrane boundary [texte imprimé] / Wang, Yuannian, Auteur ; Tonon, Fulvio, Auteur . - pp. 1029-1037. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 135 N° 9 (Septembre 2009) . - pp. 1029-1037 Mots-clés : Membranes  Discrete  elements  Boundaries  Triaxial  tests  Rocks. Résumé : A new membrane boundary that applies realistic fluid confining pressure has been developed for modeling triaxial tests on intact rock by using the discrete element method. To realistically simulate the confining pressure, the new approach applies updated boundary force rather than a “wall” boundary. The applied forces only act on the boundary particles, which are identified and updated periodically. Comparisons between rigid-wall boundary and membrane boundary show that rigid-wall boundary can significantly alter the material response especially the material strength. The effect of confining pressures on the simulated results of triaxial tests is also investigated. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&smode=strres [...]