Modeling of ground excavation with the particle finite-element method / Carbonell, Josep Maria in Journal of engineering mechanics, Vol. 136 N° 4 (Avril 2010)  

Public ISBD [article]  inJournal of engineering mechanics > Vol. 136 N° 4 (Avril 2010) . - pp. 455-463 Titre : Modeling of ground excavation with the particle finite-element method Type de document : texte imprimé Auteurs : Carbonell, Josep Maria, Auteur ; Oñate, Eugenio, Auteur ; Suárez, Benjamín, Auteur Article en page(s) : pp. 455-463 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Particles Finite element method Excavation Geometry. Résumé : An excavation process is a nonlinear dynamic problem that includes geometrical, material, and contact nonlinearities. The simulation of ground excavation has to face contact interaction in a changing geometry composed by several solid domains. The particle finite-element method (PFEM) is based on a Lagrangian description for modeling the motion of a continuum medium. The PFEM is particularly suitable for modeling a fluid motion with free surfaces. The application of the PFEM in ground excavation includes the use of the remeshing process, alpha-shape concepts for detecting the domain boundary, contact mechanics laws, material constitutive models, and surface wear models. Everything is correctly matched to quantify the excavation and the corresponding damage caused to the ground. The erosion and wear parameters of the soil/rock material govern the evolution of the excavation process. The preliminary results presented in this paper show that the PFEM it is a very suitable tool for the simulation of ground excavation processes. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&smode=strres [...] [article] Modeling of ground excavation with the particle finite-element method [texte imprimé] / Carbonell, Josep Maria, Auteur ; Oñate, Eugenio, Auteur ; Suárez, Benjamín, Auteur . - pp. 455-463. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 136 N° 4 (Avril 2010) . - pp. 455-463 Mots-clés : Particles Finite element method Excavation Geometry. Résumé : An excavation process is a nonlinear dynamic problem that includes geometrical, material, and contact nonlinearities. The simulation of ground excavation has to face contact interaction in a changing geometry composed by several solid domains. The particle finite-element method (PFEM) is based on a Lagrangian description for modeling the motion of a continuum medium. The PFEM is particularly suitable for modeling a fluid motion with free surfaces. The application of the PFEM in ground excavation includes the use of the remeshing process, alpha-shape concepts for detecting the domain boundary, contact mechanics laws, material constitutive models, and surface wear models. Everything is correctly matched to quantify the excavation and the corresponding damage caused to the ground. The erosion and wear parameters of the soil/rock material govern the evolution of the excavation process. The preliminary results presented in this paper show that the PFEM it is a very suitable tool for the simulation of ground excavation processes. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&smode=strres [...]

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