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 nonNewtonian 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.

Lubrication of Squeeze Film Between Porous Rough Circular Plates with Rabinowitsch Fluid Model

“…Substituting (10) in (9), obtained the Reynolds type equation to non-Newtonian Rabinowitsch fluid is , ( ) ( )…”

“…Singh et al [6] has presented a squeezing film characteristics to connect a long cylinder & flat plate. Lin [7] presented the non-Newtonian effect results on Rabinowitsch fluid model for parallel annular discs, slider bearings by Lin et al [8], parallel rectular squeeze film plates by Hung et al [9]. Tzeng and Saibel [10] has identified the bearing surfaces on random character of roughness.…”

Effect of surface roughness on the static characteristics of inclined plane slider bearing: Rabinowitsch fluid model

“…Recently several researchers have investigated the non-Newtonian effect of Rabinowitsch lubricants on various types of bearings. Lin et al [17], studied the non-Newtonian effect of Rabinowitsch fluid model on the slider bearings, parallel annular discs by Lin [18], parallel rectangular squeeze film plates by Lin et al [19]. A squeeze film characteristics between a long cylinder and a flat plate by Singh et al [20], non-Newtonian effects on the squeeze film characteristics between a sphere and a flat plate: Rabinowitsch Fluid model studied by Singh and Gupta [21].…”

Non-Newtonian Effects of Rabinowitsch Fluid on the Performance of Inclined Stepped Composite Bearings

“…Recently, several researchers have investigated the non-Newtonian effects of Rabinowitsch lubricants on various types of bearings. Lin et al studied the non-Newtonian effects of Rabinowitsch fluid model on the slider bearings [11], parallel annular disks [12] and parallel rectangular squeeze-film plates [13] respectively. Variational principal for non-Newtonian lubrication: Rabinowitsch fluid model analyzed by He [14].…”