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SUMMARY:A Coupled FEM-DEM Approach for Granular Materials
DTSTART:20111108T140000
DTSTAMP:20260916T061342Z
UID:2d3abfd24cc6a9a440bf927dc0348c4e540f1557858706a898574e93
CATEGORIES:Conferences - Seminars
DESCRIPTION:Peter Wriggers\, Leibniz University Hannover\, Germany\nMany o
 f the raw materials handled in chemical industries appear in granulated or
  particulate form. Ideally  in an attempt to reduce laboratory expenses  o
 ne would like to make predictions of a complex granular flow's behavior by
  numerical simulations  with the primary goal being to minimize time-consu
 ming trial and error experiments. Within this contribution a concurrent tw
 o-scale model of non-cohesive frictional granular materials is developed. 
 The approach is motivated by the fact that these materials tend to show lo
 calizations of deformation in small domains which can hardly be modeled by
  the classical continuum approach. The same is true for penetration proces
 ses that need usually very special discretization techniques. Therefore  t
 hese domains will be modeled by a discrete particle method that on the oth
 er hand is computationally too expensive to model a complete macroscopic p
 roblem. Hence  the problem domain is split into a domain of small  rather 
 homogeneous deformation that will be modeled as continuum using the Finite
  Element Method (FEM) and a domain of large  eventually discontinuous defo
 rmation modeled by a three-dimensional Discrete Element Method (DEM). In t
 he latter method the particles assume individual geometries that are appro
 ximated by superquadrics. The domain coupling can either be achieved by a 
 Arlequin method or a classical surface coupling.
LOCATION:CM 1 106
STATUS:CONFIRMED
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