Documents disponibles écrits par cet auteur

Bifurcation theory and localization phenomena / Jean Sulem in European journal of environmental and civil engineering, Vol. 14 N° 8-9 (Septembre 2010) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 14 N° 8-9 (Septembre 2010) . - pp. 989-1009 Titre : Bifurcation theory and localization phenomena Type de document : texte imprimé Auteurs : Jean Sulem, Auteur Année de publication : 2011 Article en page(s) : pp. 989-1009 Langues : Anglais (eng) Mots-clés : Strain  localization  Bifurcation  Constitutive  models  Fluid  Temperature Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : The principles of strain localization analysis as applied to geomaterials are presented. Emphasis is given to the effects of fluid and temperature in the occurrence and development of instabilities. Note de contenu : Génie Civil DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp [article] Bifurcation theory and localization phenomena [texte imprimé] / Jean Sulem, Auteur . - 2011 . - pp. 989-1009. Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 14 N° 8-9 (Septembre 2010) . - pp. 989-1009 Mots-clés : Strain  localization  Bifurcation  Constitutive  models  Fluid  Temperature Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : The principles of strain localization analysis as applied to geomaterials are presented. Emphasis is given to the effects of fluid and temperature in the occurrence and development of instabilities. Note de contenu : Génie Civil DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp

Continuum modeling of discontinuous rock structures / Ioannis Stefanou in European journal of environmental and civil engineering, Vol. 14 N° 8-9 (Septembre 2010) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 14 N° 8-9 (Septembre 2010) . - pp. 1199-1217 Titre : Continuum modeling of discontinuous rock structures : Homogenization of discrete particle assemblies Type de document : texte imprimé Auteurs : Ioannis Stefanou, Auteur ; Jean Sulem, Auteur Année de publication : 2011 Article en page(s) : pp. 1199-1217 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Cosserat  continuum  Micromorphic  continuum  Homogenization  Rock  joints Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : A continuum model for discontinuous rock masses is presented here. The discrete system is formed by three joint sets of arbitrary geometrical and mechanical properties. In the general case the joint blocks are parallelepipeds that interact through their interfaces transferring both forces and torques. For geometrical reasons the inertia tensor of the blocks is not isotropic and the bending at the interfaces is non-symmetric. The derived continuum is an anisotropic three dimensional Cosserat continuum, which approximates the discrete system for wavelengths five times bigger the characteristic length of the typical rock block. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp [article] Continuum modeling of discontinuous rock structures : Homogenization of discrete particle assemblies [texte imprimé] / Ioannis Stefanou, Auteur ; Jean Sulem, Auteur . - 2011 . - pp. 1199-1217. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 14 N° 8-9 (Septembre 2010) . - pp. 1199-1217 Mots-clés : Cosserat  continuum  Micromorphic  continuum  Homogenization  Rock  joints Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : A continuum model for discontinuous rock masses is presented here. The discrete system is formed by three joint sets of arbitrary geometrical and mechanical properties. In the general case the joint blocks are parallelepipeds that interact through their interfaces transferring both forces and torques. For geometrical reasons the inertia tensor of the blocks is not isotropic and the bending at the interfaces is non-symmetric. The derived continuum is an anisotropic three dimensional Cosserat continuum, which approximates the discrete system for wavelengths five times bigger the characteristic length of the typical rock block. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp

The effect of undrained heating on a fluid-saturated hardened cement paste / Siavash Ghabezloo in Cement and concrete research, Vol. 39 N° 1 (Janvier 2009) 

Public ISBD [article]  in Cement and concrete research > Vol. 39 N° 1 (Janvier 2009) . - pp. 54–64 Titre : The effect of undrained heating on a fluid-saturated hardened cement paste Type de document : texte imprimé Auteurs : Siavash Ghabezloo, Auteur ; Jean Sulem, Auteur ; Jérémie Saint-Marc, Auteur Année de publication : 2009 Article en page(s) : pp. 54–64 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Hardened  cement  paste;  Thermo-poro-elasticity;  Thermal  pressurization;  Pore  pressure;  Thermal  expansion Résumé : The effect of undrained heating on volume change and induced pore pressure increase is an important point to properly understand the behaviour and evaluate the integrity of an oil well cement sheath submitted to rapid temperature changes. This thermal pressurization of the pore fluid is due to the discrepancy between the thermal expansion coefficients of the pore fluid and of the solid matrix. The equations governing the undrained thermo-hydro-mechanical response of a porous material are presented and the effect of undrained heating is studied experimentally for a saturated hardened cement paste. The measured value of the thermal pressurization coefficient is equal to 0.6 MPa/°C. The drained and undrained thermal expansion coefficients of the hardened cement paste are also measured in the heating tests. The anomalous thermal behaviour of cement paste pore fluid is back analysed from the results of the undrained heating test. ISSN : 0008-8846 En ligne : http://www.sciencedirect.com/science/article/pii/S0008884608001762 [article] The effect of undrained heating on a fluid-saturated hardened cement paste [texte imprimé] / Siavash Ghabezloo, Auteur ; Jean Sulem, Auteur ; Jérémie Saint-Marc, Auteur . - 2009 . - pp. 54–64. Génie Civil Langues : Anglais (eng) in Cement and concrete research > Vol. 39 N° 1 (Janvier 2009) . - pp. 54–64 Mots-clés : Hardened  cement  paste;  Thermo-poro-elasticity;  Thermal  pressurization;  Pore  pressure;  Thermal  expansion Résumé : The effect of undrained heating on volume change and induced pore pressure increase is an important point to properly understand the behaviour and evaluate the integrity of an oil well cement sheath submitted to rapid temperature changes. This thermal pressurization of the pore fluid is due to the discrepancy between the thermal expansion coefficients of the pore fluid and of the solid matrix. The equations governing the undrained thermo-hydro-mechanical response of a porous material are presented and the effect of undrained heating is studied experimentally for a saturated hardened cement paste. The measured value of the thermal pressurization coefficient is equal to 0.6 MPa/°C. The drained and undrained thermal expansion coefficients of the hardened cement paste are also measured in the heating tests. The anomalous thermal behaviour of cement paste pore fluid is back analysed from the results of the undrained heating test. ISSN : 0008-8846 En ligne : http://www.sciencedirect.com/science/article/pii/S0008884608001762