Evaluation of a predictive constitutive model for sands / José E. Andrade in Journal of geotechnical and geoenvironmental engineering, Vol. 134 n°12 (Décembre 2008)  

Public ISBD [article]  inJournal of geotechnical and geoenvironmental engineering > Vol. 134 n°12 (Décembre 2008) . - pp. 1825–1828 Titre : Evaluation of a predictive constitutive model for sands Type de document : texte imprimé Auteurs : José E. Andrade, Auteur ; Kirk C. Ellison, Auteur Année de publication : 2009 Article en page(s) : pp. 1825–1828 Note générale : Geotechnical and geoenvironmental engineering Langues : Anglais (eng) Mots-clés : Sand Constitutive models Loads Predictions Soil properties Parameters Résumé : In this technical note, an evaluation of the robustness and predictive ability of a constitutive model for sands is performed. The model is shown to capture the main features of sand behavior under both drained and undrained monotonic loadings for a wide range of relative densities and stress paths. The main contribution of this technical note is to evaluate a robust, yet simple, constitutive framework based on a solid theoretical basis that fulfils the most fundamental requirement of any useful constitutive law: accurate predictions. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A12%281 [...] [article] Evaluation of a predictive constitutive model for sands [texte imprimé] / José E. Andrade, Auteur ; Kirk C. Ellison, Auteur . - 2009 . - pp. 1825–1828. Geotechnical and geoenvironmental engineering Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 134 n°12 (Décembre 2008) . - pp. 1825–1828 Mots-clés : Sand Constitutive models Loads Predictions Soil properties Parameters Résumé : In this technical note, an evaluation of the robustness and predictive ability of a constitutive model for sands is performed. The model is shown to capture the main features of sand behavior under both drained and undrained monotonic loadings for a wide range of relative densities and stress paths. The main contribution of this technical note is to evaluate a robust, yet simple, constitutive framework based on a solid theoretical basis that fulfils the most fundamental requirement of any useful constitutive law: accurate predictions. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A12%281 [...]

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Liquefaction mapping in finite-element simulations / Kirk C. Ellison in Journal of geotechnical and geoenvironmental engineering, Vol. 135 N° 11 (Novembre 2009)  

Public ISBD [article]  inJournal of geotechnical and geoenvironmental engineering > Vol. 135 N° 11 (Novembre 2009) . - pp. 1693–1701 Titre : Liquefaction mapping in finite-element simulations Type de document : texte imprimé Auteurs : Kirk C. Ellison, Auteur ; José E. Andrade, Auteur Année de publication : 2009 Article en page(s) : pp. 1693–1701 Note générale : Geotechnical and geoenvironmental engineering Langues : Anglais (eng) Mots-clés : Soil liquefactionFinite element methodConstitutive modelsSimulation Résumé : Recent criteria have been developed to describe the onset of static liquefaction in constitutive models. This paper expands the theory to a finite-element framework in order to predict potentially unstable regions in granular soils at the engineering scale. Example simulations are presented for two plane strain tests and a submarine slope to demonstrate the applicability of a proposed liquefaction criterion to boundary value problems. In addition, loading rate and mesh size effects on the liquefaction prediction are examined. The methodology presented herein shows promise as a means of predicting soil liquefaction based on solid mechanical theory rather than empiricism. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000122 [article] Liquefaction mapping in finite-element simulations [texte imprimé] / Kirk C. Ellison, Auteur ; José E. Andrade, Auteur . - 2009 . - pp. 1693–1701. Geotechnical and geoenvironmental engineering Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 135 N° 11 (Novembre 2009) . - pp. 1693–1701 Mots-clés : Soil liquefactionFinite element methodConstitutive modelsSimulation Résumé : Recent criteria have been developed to describe the onset of static liquefaction in constitutive models. This paper expands the theory to a finite-element framework in order to predict potentially unstable regions in granular soils at the engineering scale. Example simulations are presented for two plane strain tests and a submarine slope to demonstrate the applicability of a proposed liquefaction criterion to boundary value problems. In addition, loading rate and mesh size effects on the liquefaction prediction are examined. The methodology presented herein shows promise as a means of predicting soil liquefaction based on solid mechanical theory rather than empiricism. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000122

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