Previous 2D AutoDyn mesh sensitivity analyses of cylinder impact on ceramic determined the 0.20-mm mesh size provides a fracture pattern that may be considered acceptable. Previous mesh sensitivity analyses used a constant erosion strain value of 1.0 for the projectile and 2.0 for the target. Using the accepted 0.20-mm mesh size, analysis has been conducted to determine the effect of erosion strain on target fracture patterns and projectile kinetic energies. Erosion strain sensitivity analysis is performed using three different geometric strain values for both the target and projectile, totaling 9 different models. We will explore the effect of plastic strain erosion in further AutoDyn analyses.