HYDRODYNAMIC SQUEEZE FILM LUBRICATION BETWEEN ROUGH PARALLEL PLATES: HIP-JOINT REPRESENTATION WITH MODIFIED BOUNDARY CONDITIONS

Objectives: The objective of this paper is to analyze the unsteady hydrodynamic squeeze film lubrication between rough parallel plates with changed boundary conditions. Methods/Statistical analysis: The stochastic model of Christensen and Tonder has been deployed here to evaluate the effect of surface roughness. Also the effect of roughness parameters on different moments is numerically modelled. The associated stochastically averaged Reynolds equation is solved to obtain the pressure distribution. The results obtained here are presented in graphical forms. Findings: It has been conclusively establish that in general the transverse surface roughness effects the bearing performance adversely. Out of the three roughness parameters the standard deviation influences the bearing system significantly. Further a better situation is registered with reference to X3 axis. Application/Improvements: This theory can be developed to manufacture a suitable design for hip-joint.