Nikhil Madan, M.Sc., Eng.

Department of Information and Computational Science (ZIiNO)
Division of Computational Methods in Nonlinear Mechanics (PMOMN)
position: doctoral student
telephone: (+48) 22 826 12 81 ext.: 412
room: 422
e-mail: nmadan

Conference abstracts
1.Rojek J., Zubelewicz A., Madan N., Nosewicz S., New formulation of the discrete element method, CMM-2017, 22nd International Conference on Computer Methods in Mechanics, 2017-09-13/09-16, Lublin (PL), pp.MS13-27-MS13-28, 2017
Abstract:

This work presents a new original formulation of the discrete element method based on the soft contact approach. The standard DEM has been enhanced by introduction of the additional (global) deformation mode caused by the stresses in the particles induced by the contact forces. Uniform stresses and strains are assumed for each particle. The stresses are calculated from the contact forces. The strains are obtained using an inverse constitutive relationship. The strains allow us to obtain deformed particle shapes. The deformed shapes (ellipses) are taken into account in contact detection and evaluation of the contact forces. The numerical example shows that a particle deformation changes the particle interaction and the distribution of forces in the discrete element assembly.

Keywords:

discrete element method; deformable particles; soft contact

Affiliations:
Rojek J.-IPPT PAN
Zubelewicz A.-other affiliation
Madan N.-IPPT PAN
Nosewicz S.-IPPT PAN