A comparison of the flow behaviour in knee articulations as a function of the friction factor
In this work the flow behavior in the channel formed in the knee articulation is analyzed using Reynolds′ equation. The comparison between natural and prosthetic knee is achieved through the evaluation of the corresponding friction coefficients which are added to the Reynold′s equation. The friction coefficients are determined by relating them to the surface roughness, shear stresses, contact angles, work adhesion, and surface tension as described by Rabinowicz. The surface tension was evaluated theoretically by thermodynamic approach using the extended theory of xDVLO. SEM microscopy in human meniscus showed that its surface is formed by crests and valleys knitted on specific directions. For the synovial liquid -meniscus friction couple, as found out on the same SEM analysis, it was considered that the meniscus is a low permeability material and its influence neglected. It was found that slip could increase as the friction coefficient decreases.
component free energy prosthesis friction coefficient
J.M.Rodriguez Lelis Alvarez Vera Melvin Justo Juvenal Solano Pérez Gilberto Pina Pina Tejero Andrade José Manuel Ascencio Gutierrez Jorge A Zavala Padilla Guadalupe Marciano Vargas Trevino
Departamento de Ingeniería Mecánica Centro Nacional de Investigación y Desarrollo Tecnológico.Cuerna Departamento de Ing.Mecánica Instituto Tecnológico de Veracruz.Veracruz,Veracruz.México Instituto de Ciencias Fisicas,UNAM.Cuernavaca,Morelos.México Universidad Autonoma Benito Juarez de Oaxaca,Escuela de Ciencia,Ciudad Universitaria,Avenida Univers
国际会议
北京
英文
1-3
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）