Related Experiment Video
Updated: Aug 16, 2026

Studying Large Amplitude Oscillatory Shear Response of Soft Materials
Published on: April 25, 2019
Role of anisotropy in the elastoplastic response of a polygonal packing
F Alonso-Marroquín1, S Luding, H J Herrmann
1ICP, University of Stuttgart, Pfaffenwaldring 27, 70569 Stuttgart, Germany and National Technical University of Athens, 5 Heroes of Polytechnion, 15773 Athens, Greece. fernando@ica1.uni-stuttgart.de
Abstract:
We study the effect of the anisotropy induced by loading on the elastoplastic response of a two dimensional discrete element model granular material. The anisotropy of the contact network leads to a breakdown of the linear isotropic elasticity. We report on a linear dependence of the Young moduli and Poisson ratios on the fabric coefficients, measuring the anisotropy of the contact network. The resulting nonassociated plastic flow rule and the linear relationship between dilatancy and stress ratio are discussed in terms of several existing models. We propose a paradigm for understanding soil plasticity, based on the correlation between the plastic flow rule and the induced anisotropy on the subnetwork of sliding contacts.
Related Concept Videos
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
Members Made of Elastoplastic Material
As the bending moment...
Plastic Deformations of Members with a Single Plane of Symmetry
Plastic Behavior
Plastic Deformations
Plastic Deformations
