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Strain path controlled shear tests on an analogue granular material / E. Ibraim in Géotechnique, Vol. 60 N° 7 (Juillet 2010) 

Public ISBD [article]  in Géotechnique > Vol. 60 N° 7 (Juillet 2010) . - pp. 545–559 Titre : Strain path controlled shear tests on an analogue granular material Type de document : texte imprimé Auteurs : E. Ibraim, Auteur ; J. Lanier, Auteur ; D. Muir Wood, Auteur Année de publication : 2011 Article en page(s) : pp. 545–559 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Laboratory  tests  Stress  path  Constitutive  relations Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : A series of strain controlled tests have been performed on a two-dimensional analogue granular material, composed of three different sizes of rods, in a special laboratory apparatus which permits full control of plane deformations, including rotation of principal axes. These tests have been designed and used to explore certain constitutive conjectures concerning the mechanical behaviour of granular materials. The results, within the accuracy of the apparatus, show that irrespective of the initial stress history of the material, proportional strain paths (if continued for long enough) lead to proportional stress states (asymptotic states). The asymptotic states appear to be independent of the fixed imposed rotation of principal strain axes and at these states coaxiality between the principal stress direction and the principal incremental strain direction seems to be reached. A stress dilatancy relationship between the imposed dilatancy and the corresponding asymptotic stress ratio has been identified. DEWEY : 624.15 ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.8.p.100 [article] Strain path controlled shear tests on an analogue granular material [texte imprimé] / E. Ibraim, Auteur ; J. Lanier, Auteur ; D. Muir Wood, Auteur . - 2011 . - pp. 545–559. Génie Civil Langues : Anglais (eng) in Géotechnique > Vol. 60 N° 7 (Juillet 2010) . - pp. 545–559 Mots-clés : Laboratory  tests  Stress  path  Constitutive  relations Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : A series of strain controlled tests have been performed on a two-dimensional analogue granular material, composed of three different sizes of rods, in a special laboratory apparatus which permits full control of plane deformations, including rotation of principal axes. These tests have been designed and used to explore certain constitutive conjectures concerning the mechanical behaviour of granular materials. The results, within the accuracy of the apparatus, show that irrespective of the initial stress history of the material, proportional strain paths (if continued for long enough) lead to proportional stress states (asymptotic states). The asymptotic states appear to be independent of the fixed imposed rotation of principal strain axes and at these states coaxiality between the principal stress direction and the principal incremental strain direction seems to be reached. A stress dilatancy relationship between the imposed dilatancy and the corresponding asymptotic stress ratio has been identified. DEWEY : 624.15 ISSN : 0016-8505 En ligne : http://www.icevirtuallibrary.com/content/article/10.1680/geot.8.p.100