Rockfall modeling: Numerical simulation of the impact of a particle on a coarse granular medium - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Communication Dans Un Congrès Année : 2007

Rockfall modeling: Numerical simulation of the impact of a particle on a coarse granular medium

Résumé

Trajectory analysis of falling rocks during rockfall events is limited by a rough modelling of the impact phase. In order to develop an accurate impact model, numerical investigations are held for a boulder impacting a coarse granular soil in the case of a boulder size equivalent to the mean size of particles. The soil is modelled as a non cohesive granular medium using the discrete element method. Numerical simulations emphasize phenomena involved in energy exchanges between the impacting particle and the granular medium. These results highlight the role of local grain spatial layout, boundary conditions and incident particle energy on the impact processes. The stochastic reflecting laws are finally defined further to a complete statistical analysis of the results. These laws are valid for a boulder and a medium type whatever the grain spatial layout and the incident energy.
Fichier non déposé

Dates et versions

hal-02589967 , version 1 (15-05-2020)

Licence

Paternité

Identifiants

Citer

Franck Bourrier, François Nicot, Felix Darve. Rockfall modeling: Numerical simulation of the impact of a particle on a coarse granular medium. 10th International Symposium on Numerical Models in Geomechanics (NUMOG X), Apr 2007, Rhodes, Greece. pp.6. ⟨hal-02589967⟩
43 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More