European journal of environmental and civil engineering : revue européenne de génie civil, Vol. 14 N° 8-9. European journal of environmental and civil engineering - Septembre 2010
| Titre : | European journal of environmental and civil engineering : revue européenne de génie civil, Vol. 14 N° 8-9. European journal of environmental and civil engineering - Septembre 2010 |
| Type de document : | Bulletin |
| Paru le : | 06/09/2011 |
Dépouillements
Article : texte imprimé
Patrick Selvadurai, Auteur
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The paper describes the application of mathematical procedures to the solution of certain initial boundary value problems that deal with the advective and advective-diffusive transport of chemicals and contaminants in fluid saturated porous media.
Article : texte imprimé
Jean Sulem, Auteur
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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.
Article : texte imprimé
Euripides Papamichos, Auteur
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A brief description of the Cosserat continuum theory is presented. In the Introduction the history of the evolution of the theory is presented followed with some examples where the differences between the classical and Cosserat continua are more[...]
Article : texte imprimé
Stefanos-Aldo Papanicolopulos, Auteur ;
Antonis Zervos, Auteur
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Second-gradient theories represent a frequently used subset of theories of continua with microstructure. This paper presents an extended overview of second-gradient theories, starting from a simple one-dimensional example, proceeding with a thor[...]
Article : texte imprimé
Panos Papanastasiou, Auteur
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We present computational analysis of geomechanics problems in the post failure regime based on a Cosserat material model The introduction of internal length (related to grain size) in the Cosserat model improves the computational stability and a[...]
Article : texte imprimé
Antonis Zervos, Auteur ;
Panos Papanastasiou, Auteur
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This article presents a theory of Gradient Elastoplasticity for strain-softening materials, in which internal length scales are present in both the elastic and the elastoplastic regime. A numerical discretisation based on the displacement formul[...]
Article : texte imprimé
George Exadaktylos, Auteur
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A new constant displacement discontinuity method is presented for the numerical solution of cracks of the three fundamental deformation modes I, II and III lying either in the plane or in the half-plane. This method is based on the strain-gradie[...]
Article : texte imprimé
Ioannis-Orestis S. Georgopoulos, Auteur
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In the fields of experimental geomechanics, the classical or typical triaxial apparatus is one of the most widely used testing equipments for the estimation of the material parameters. The testing procedure is rather simple and the basic princip[...]
Article : texte imprimé
Maria Stavropoulou, Auteur
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An elastoplastic continuum model is developed for the investigation of the susceptibility of almost saturated granular materials to liquefaction under undrained isotropic compression. The model was successfully validated against published experi[...]
Article : texte imprimé
Euripides Papamichos, Auteur
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Experimental results from sand production hollow cylinders tests are presented for cavity failure and sand production quantification. The effects of important parameters such as the sandstone class, stress rate, fluid flow rate, and time are pre[...]
Article : texte imprimé
Emmanouil Vairaktaris, Auteur
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In engineering science, analysis of inverse problems is a rapidly growing discipline following computer evolution and developments in numerical methods. In geomechanics, numerous works are concerning parameter identification in contrast with bou[...]
Article : texte imprimé
Francesco Froiio, Auteur ;
Eleni Gerolymatou, Auteur
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We discuss the microstructural origin of stress tensors for granular materials in the context of "non simple" continuum models, of the micropolar and of the second-gradient type. Stress tensors are looked upon as generalised forces in the sense [...]
Article : texte imprimé
Sotirios Alevizos, Auteur ;
Eleni Gerolymatou, Auteur ;
Emmanuil Veveakis, Auteur
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The problem of creeping landslides accompanied by heat production due to friction on their base is studied here. The landslide is modelled using a rigid block that slides over a clayey zone of finite width and a thermal softening and velocity st[...]
Article : texte imprimé
Continuum modeling of discontinuous rock structures : Homogenization of discrete particle assemblies
Ioannis Stefanou, Auteur ;
Jean Sulem, Auteur
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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 throu[...]
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