Comparing numerical and experimental approaches for the stochastic modeling of the bouncing of a boulder on a coarse soil / Franck Bourrier in European journal of environmental and civil engineering, Vol. 14 N° 1 (Janvier 2010)  

Public ISBD [article]  inEuropean journal of environmental and civil engineering > Vol. 14 N° 1 (Janvier 2010) . - pp. 87-111 Titre : Comparing numerical and experimental approaches for the stochastic modeling of the bouncing of a boulder on a coarse soil Type de document : texte imprimé Auteurs : Franck Bourrier, Auteur ; Nicot, François, Auteur ; Nicolas Eckert, Auteur Année de publication : 2010 Article en page(s) : pp. 87-111 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Rockfall hazard Impact Discrete element method Stochastic Trajectory analysis Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : This paper proposes numerical investigations for the stochastic modeling of a boulder impacting a coarse granular soil. The soil is considered as a noncohesive granular medium using a discrete element method and the soil model is calibrated compared to results from half-scale experiments. Based on this numerical model, an extensive numerical simulation campaign is carried out. The statistical analysis of the numerical results allows the definition of a stochastic bouncing model that quantifies most of the variability of the numerical results. Comparisons with classical bouncing models in the field of trajectory analysis highlight that this model expands classical approaches. The comparison of results from real-scale experiments to trajectory simulations based on the stochastic model show the relevance of the proposed approach to modeling rockfall trajectories. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp [article] Comparing numerical and experimental approaches for the stochastic modeling of the bouncing of a boulder on a coarse soil [texte imprimé] / Franck Bourrier, Auteur ; Nicot, François, Auteur ; Nicolas Eckert, Auteur . - 2010 . - pp. 87-111. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 14 N° 1 (Janvier 2010) . - pp. 87-111 Mots-clés : Rockfall hazard Impact Discrete element method Stochastic Trajectory analysis Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : This paper proposes numerical investigations for the stochastic modeling of a boulder impacting a coarse granular soil. The soil is considered as a noncohesive granular medium using a discrete element method and the soil model is calibrated compared to results from half-scale experiments. Based on this numerical model, an extensive numerical simulation campaign is carried out. The statistical analysis of the numerical results allows the definition of a stochastic bouncing model that quantifies most of the variability of the numerical results. Comparisons with classical bouncing models in the field of trajectory analysis highlight that this model expands classical approaches. The comparison of results from real-scale experiments to trajectory simulations based on the stochastic model show the relevance of the proposed approach to modeling rockfall trajectories. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp

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