Effects of non‐Newtonian Rabinowitsch fluids in wide parallel rectangular squeeze‐film plates

Abstract

Purpose

In the present paper, the authors aim to analyze the non‐Newtonian effects of Rabinowitsch fluids on the squeeze film performances between wide parallel rectangular plates.

Design/methodology/approach

Based on the cubic‐stress equation model, a nonlinear squeeze‐film Reynolds‐type equation has been derived. By using a small perturbation method, a closed‐form solution of the squeeze film characteristics is derived for the parallel plates considering the non‐Newtonian effects of cubic stresses.

Findings

Comparing with the Newtonian‐lubricant parallel plates, the effects of non‐Newtonian cubic‐stress flow rheology provide significant influences upon the squeeze film characteristics.

Originality/value

It is shown that the non‐Newtonian pseudoplastic behavior reduces the load capacity and the response time; however, the effects of non‐Newtonian dilatant lubricant provide an increase in the load‐carrying capacity and therefore lengthen the response time of parallel squeeze‐film plates.

Citation

Lin, J., Hung, C., Chu, L., Liaw, W. and Lee, P. (2013), "Effects of non‐Newtonian Rabinowitsch fluids in wide parallel rectangular squeeze‐film plates", Industrial Lubrication and Tribology, Vol. 65 No. 5, pp. 328-332. https://doi.org/10.1108/ILT-03-2011-0018