This document presents the results from discrete element method (DEM) simulations of interface shear compared to previously published data from similar physical experiments. Rough shafts emplaced in granular assemblies are subjected to monotonic and cyclic loading and the results evaluated. The granular‐continuum interface behavior for different anchor surface roughnesses is presented and compared to the work by Paikowsky et al. (1995) and Uesugi and Kishida (1986). Comparisons between DEM and physical experiments for cyclic loading are performed by considering anchor efficiency, degradations, and load magnitude. The model is described in detail in the project report for Checkpoint 4.1.1, which also contains model input parameters, results from parametric analyses, and a sample model script. These items are not repeated herein.