ABSTRACT
In the first part of this chapter, the Archard wear model, as well as improving mesh quality during wear, is discussed. In the second part, the Archard wear model is applied to study the wear of a hip replacement. A three-dimensional (3D) finite element model was developed to simulate the wear of a hip replacement. The major sliding occurs between the femoral head and the liner. Thus, the wear simulation focused on the contact pair between the femoral head and the liner. The wear simulation includes two load steps. The first step is ramp load without wear, and then wear simulation occurs with a very small time step. The computational results indicate that the contact stresses of the liner start at a low value, gradually increase to a peak, and then drop a little. The final wear distribution of the liner is consistent with the contact pressure.
