Influence of particle elasticity in shear testers
Dirk Kadau, Dominik Schwesig, Joerg Theuerkauf, Dietrich E. Wolf
Abstract
Two dimensional simulations of non-cohesive granular matter in a biaxial shear tester are discussed. The effect of particle elasticity on the mechanical behavior is investigated using two complementary distinct element methods (DEM): Soft particle molecular dynamics simulations (Particle Flow Code, PFC) for elastic particles and contact dynamics simulations (CD) for the limit of perfectly rigid particles. As soon as the system dilates to form shear bands, it relaxes the elastic strains so that one finds the same stresses for rigid respectively elastic particles in steady state ow. The principal stresses in steady state ow are determined. They are proportional to each other, giving rise to an effective macroscopic friction coefficient which is about 10 % smaller than the microscopic friction coefficient between the grains.
Create a lesson
Related papers
Automatic generation of exchange-correlation response kernels
Susi Lehtola
A unified gas-kinetic wave-particle method for multiscale gas-mixture flow with an elementary chemical reaction
Cao Junzhe, Wei Yufeng, Long Wenpei et al.
Energy Yield and Lifetime Climate Classification via Machine Learning for Optimizing Photovoltaic Module Design and Materials
Youri Blom, Sofia Dutto, Alexandru Costache et al.
Rapidly Convergent Finite-Element Domain Decomposition Method With Two-Channel Transmission Conditions
Furkan Şık, Fernando L. Teixeira, Balasubramaniam Shanker
A sharp-diffuse interface model for intermittent and isolated topological transitions
Raaghav Ramani
Macroparticles with different weights relax to different temperatures in Particle-In-Cell simulations
Remi Lehe, Arianna Formenti, Justin R. Angus et al.