Développement de techniques de calcul parallèle haute performances pour la simulation numérique d'impacts de blocs sur couches granulaires.

Implementation of HPC techniques for the numerical simulation of boulder impacts on granular layers.

• Auteur / Autrice : Roberto Leon
• Direction : Philippe Mestat, Luis SALINAS
• Type : Projet de thèse
• Discipline(s) : Sciences de l'ingénieur
• Date : Inscription en doctorat le 01/01/2011
• Etablissement(s) : Paris Est en cotutelle avec Universitad Tecnica Federico Santa Maria
• Ecole(s) doctorale(s) : SIE - Sciences, Ingénierie et Environnement
• Partenaire(s) de recherche : Laboratoire : GER - Géotechnique, Eau et Risques

Mots clés

Mots clés libres

modélisation mécanique

simulation numérique

HPC (calcul parallèle haute perfomances)

optimisation

mechanical model

numerical simulation

high performance computing

optimization

Résumé

The description of instantaneous multi-particle collisions is very difficult to simulate. It must considerer the evolution of the system with a deformable behavoir and apply a set of percussion which are acting in the system. From the mechanical point of view it is possible modelling the behavoir of the system considering the principle of virtual work. From the computational point of view is precise to simulate the mechanical model presented. In this approach the model could considerer a set of bodies of 10 to 50 elements, but the main goal is to achieve a simulation with a set of bodies of 5000 or 10000 top; for this purpose a parallel technique is presented with the task to increase the number of bodies with the same time of computations. A visualization interface is presented as well showing the results of the model.