Convergence Study for Rock Unconfined Compression Test Using Discrete Element Method

Mesh convergence is a vital issue that needs to be addressed in numerical model. This study investigated the effects of mesh element number on Discrete Element Method (DEM) granite rock response under compression loading. used 3D finite-element code LS-DYNA model Unconfined Compression Test (UCT) simulation. Models with five different types were conducted for mesh, namely normal fine super coarse and mesh. The media has been using DEM steel plates simulated Finite (FEM). DEM-FEM analysis compared results obtained from experimental test. best was as simulation could reproduce stress-strain curve trends, failure behaviour strength observed selected type this based comparisons have made. shows can represent further convergence.