SciELO - Scientific Electronic Library Online

vol.45 número1Analysis of chitosan/polyvinylpyrrolidone (structure, ftir, electrostatic potential, homo/lumo orbitals) using computational chemistryPhotocatalytic activity of ZnAl2O4 spinel for procion red degradation under UV irradiation índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Latin American applied research

versión On-line ISSN 1851-8796


DI PAOLO, J  y  BERLI, M.E. Lubrication predictions for total knee prosthesis made of hard materials. Lat. Am. appl. res. [online]. 2015, vol.45, n.1, pp. 45-50. ISSN 1851-8796.

The lubricated contact zone in a total knee prosthesis is modeled, where femoral and tibial components are supposed to be made of hard materials (high stiffness and hardness) and lubricated by a non Newtonian fluid (synovial liquid). To determine optimal relations among geometric parameters, load and film thickness, a generalized Reynolds equation was solved by means of finite element method. Although mix lubrication regime is predominant, it is shown that increasing conformity, it could be assure a full-film lubrication regime in most of the gait cycle. These results might be a reference to make more durable total knee prostheses

Palabras llave : Knee Prosthesis; Lubrication; Ceramic to Ceramic Contact; Film Thickness; Finite Element Method.

        · texto en Inglés     · pdf en Inglés