Estudio del efecto dinámico y simulación por medio de elementos finitos en materiales arenosos

Abstract

The present project develops and validates a model to determine instability criteria in granular materials under multiphysical loads, like interaction with fluids. This model works with two Numerical Methods, which are Discrete Elements (DEM) and Computational Fluid Dynamics (CFD), getting their interaction to perform custom modeling interfaces under new criteria. These open the way for new applications in fields as diverse as the study of landslides in vulnerable areas, behavior of grains under dynamic disturbances, study of resting angles and plastic behavior. In the project an analysis of the shape and the geometry of the particles were carried out, obtaining a characteristic shape of the particle of sand according to models of contact and validate the results with experimental tests. Once characterized the material, saturates the granular material until a fault occurs. The material experiences a maximum angle before sliding occurs, this is the critical angle of stability with a value of 47 ° for the secondary surface and a value of 57 ° for the secondary surface. The development of the project is a starting point to start a line of research in the field of granular materials as a complement to the current lines of Computational mechanics.