[en] The Mohr-Coulomb, Barton-Bandis, and Continuously-Yielding, rock joint models and their numerical implementation in the UDEC code were evaluated for their ability to simulate joint behavior under cyclic pseudostatic and dynamic loading conditions. Some deficiencies, of these joint models and their implementation in UDEC were identified. These deficiencies include that the rock joint models under evaluation may not be able to sufficiently predict the joint shear and dilation behavior during reverse joint shearing. Both joint forward and reverse shearing are important phenomena of a rock joint behavior. Reverse shearing can result from earthquakes, thermal load, or both - all of which are expected to be experienced during the life of a high-level waste repository. These deficiencies could result in an overestimation of the stability of emplacement drifts and emplacement boreholes and prediction of incorrect near-field flow pattern (including preferential pathways for water and gas)