Metal-on-Metal hip prostheses lubrication analysis for Newtonian elastohydrodynamic fluid

Abstract

The work focus on critical issues related to wear of artificial hip implants. Finite Element Method based simulation approach is developed for MoM (Metal-on-Metal) artificial hip implants performance study. The development of FEM model is used to identify the factors that are responsible for wear or damage in the MoM hip implants. The analysis describes the nonlinear behavior of lubricants for textured surfaces geometry. The nominal fluid-film thickness equations are used for journal bearing having non-recessed type configurations and restrictor flow mathematical evaluation. The solution of unknown fluid film pressure field is obtained in this work by solving the modified Reynolds equation along with restrictor flow equations with appropriate boundary conditions. This work is targeted towards the introduction of effective methods for reducing the wear in MoM hip implants. The results are generated at higher accuracy so that the performance can match with the realistic results.