The effect of a non-Newtonian lubricant on piston ring lubrication

Curvilinear Squeeze Film Bearing with Porous Wall Lubricated by a Rabinowitsch Fluid

“…The influence of the pad porosity is significant for small values of  , for . 0 05    [5][6][7][8][12][13][14] The comparison with the case of Newtonian lubricants   0   generally shows that the dilatant effects   0   increase the film pressure but the pseudo-plastic effects   0   decrease the film pressure [12][13][14]. Figure 5 presents the load-carrying capacity N  as a function of the squeezing ratio  .…”

“…In the sixties of the past century Rotem and Shinnar [4] returned to the polynomial representation proposing their own model similar to the one of Rabinowitsch. Theoretical considerations and some ranges of experiments carried out by Wada and Hayashi [5,6] indicated on good usefulness the Rabinowitsch fluid to modelling various lubrication problems. These problems have been analyzed by many investigators, for instance as journal bearings were studied by Wada and Hayashi [5,6], Swamy et al [7], Rajalingham et al [8], Sharma et al [9], hydrostatic thrust bearing by Singh et al [10], squeeze film bearings by Hashimoto and Wada [11], Lin [12], Lin et al [13]. More general lubrication problems include hybrid bearings modelled by two generally non-coaxial surfaces of revolution which can work simultaneously as journal and/or thrust bearings.…”

Curvilinear Squeeze Film Bearing Lubricated with a Dehaven Fluid or with Similar Fluids

“…In the sixties of the past century Rotem and Shinnar [13] returned to the polynomial representation proposing their own model similar to that one of Rabinowitsch. Theoretical considerations and some experiments carried out by Wada and Hayashi [6] indicated the usefulness of the Rabinowitsch fluid to modelling various lubrication problems. These problems have been analyzed by many investigators, for instance journal bearings were studied by Wada and Hayashi [6], Rajalingham et al [8], Sharma et al [14], Swamy et al [7], hydrostatic thrust bearing by a Singh et al [15], squeeze film bearings by Hashimoto and Wada [16], Lin [17], Lin et al [18]. More general lubrication problems include hybrid bearings modelled by two generally non-coaxial surfaces of revolution which can work simultaneously as journal and/or thrust bearings.…”

“…There has been no generally acceptable theory taking into account the flow behaviour of non-Newtonian lubricants. Studies have been done on fluid film lubrication employing several models such as micropolar (see e.g.,: Walicka, [1]) couple-stress (Walicki and Walicka [2]), mixture (Khonsari and Dai [3]), viscoplastic (Lipscomb and Denn [4]; Dorier and Tichy [5]), pseudo-plastic (Wada and Hayashi [6]; Swamy et al [7]; Rajalingham et al [8]). Naturally, this list is not complete and given only to present the possibility of mathematical modelling.…”

Mechanical Parameters of the Curvilinear Squeeze Film Bearing Lubricated by a Gecim-Winer Fluid

“…Studies done on fluid film lubrication have employed several models such as the micropolar [8], couple-stress [9][10][11][12], viscoplastic [1][2][3]7], pseudo-plastic [13][14][15][16] and mixture [17]. Naturally, this list is not complete and given only to present the possibility of mathematical modelling.…”