Effects of permeability and surface roughness on the behavior of an oscillating viscoelastic squeeze film

Abstract

Purpose

The purpose of this paper is to present a parametric study of the effects of permeability and surface roughness on the hydrodynamic force and the leakage flow rate in an oscillating squeeze film between a rigid surface and a rubber surface.

Design/methodology/approach

The study is conducted numerically using a squeeze film model that incorporates the effects of viscoelasticity, permeability and surface roughness.

Findings

It is seen that with increasing permeability of the porous rubber block, both the hydrodynamic force and the leakage flow rate decrease. Increasing center line average (CLA) of surface roughness height distribution decreases the leakage flow rate slightly but increases the hydrodynamic force. The decrease in the hydrodynamic force due to using permeable material in squeeze film may be compensated for by deliberately increasing the surface roughness. The effect of variation in frequency of system vibration may be minimized by using optimally selected permeable materials with rough surface.

Originality/value

The paper reports the extension of previous work of the authors and the results of this portion were never published. The findings of this paper are based on original work and have practical value.

Citation

Mahbubur Razzaque, M. and Mustafa, M. (2013), "Effects of permeability and surface roughness on the behavior of an oscillating viscoelastic squeeze film", Industrial Lubrication and Tribology, Vol. 65 No. 1, pp. 37-43. https://doi.org/10.1108/00368791311292792