Mixed-lubrication analysis of marine stern tube bearing considering bending deformation of stern shaft and cavitation

Abstract A mixed-lubrication model has been developed to study tribological characteristics of a marine stern tube bearing. The finite difference method is employed to obtain numerical solutions of the Reynolds equation using combined Newton–Raphson and iterative relaxation methods. The differential equation of deflection curve of the propeller shaft is used to describe the bending deformation of propeller shaft. The displacement superposition method is used to solve the differential equation of deflection. The influences of cavitation and different boundary conditions, the Reynolds boundary condition and Jacobsson–Floberg and Olsson (JFO) boundary condition, as well as the bending deformation of shaft, on the Stribeck Curves are discussed in this paper.

[1]  Dong Zhu,et al.  Elastohydrodynamic Lubrication: A Gateway to Interfacial Mechanics—Review and Prospect , 2011 .

[2]  H. Elrod.  A Cavitation Algorithm , 1981 .

[3]  J. Greenwood,et al.  Contact of nominally flat surfaces , 1966, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[4]  Michel Fillon,et al.  An Experimental Analysis of Misalignment Effects on Hydrodynamic Plain Journal Bearing Performances , 2002 .

[5]  P. K. Goenka,et al.  The Elastohydrodynamic Solution of Journal Bearings Under Dynamic Loading , 1985 .

[6]  L. Chupin,et al.  Compressible Fluid Model for Hydrodynamic Lubrication Cavitation , 2013 .

[7]  Bengt Jakobsson,et al.  The finite journal bearing, considering vaporization (Das Gleitlager von endlicher Breite mit Verdampfung) , 1957 .

[8]  Wei Chen,et al.  A Three-Dimensional Deterministic Model for Rough Surface Line-Contact EHL Problems , 2007 .

[9]  J. F. Booker.  Dynamically Loaded Journal Bearings: Mobility Method of Solution , 1965 .

[10]  Harish Hirani,et al.  Tribological study of elastomeric bearings for marine propeller shaft system , 2009 .

[11]  Theo G. Keith,et al.  Analysis of a Finite Grooved Misaligned Journal Bearing Considering Cavitation and Starvation Effects , 1990 .

[12]  B. Bhushan.  Contact mechanics of rough surfaces in tribology: multiple asperity contact , 1998 .

[13]  Hannes Allmaier,et al.  Refined simulation of friction power loss in crank shaft slider bearings considering wear in the mixed lubrication regime , 2012 .

[14]  Daniel Rixen,et al.  Calculation of Stribeck curves for (water) lubricated journal bearings , 2007 .

[15]  K. P. Oh.  The Numerical Solution of Dynamically Loaded Elastohydrodynamic Contact as a Nonlinear Complementarity Problem , 1984 .

[16]  Su Hong.  Determining the Value of Pressure in the Cavitation Zone for Steady-state Journal Bearing , 2007 .

[17]  Hannes Allmaier,et al.  Predicting friction reliably and accurately in journal bearings – The importance of extensive oil-models , 2012 .

[18]  Ning Ren,et al.  Behavior of Elastic-Plastic Rough Surface Contacts as Affected by Surface Topography, Load, and Material Hardness , 1996 .

[19]  J. F. Booker,et al.  Dynamically-Loaded Journal Bearings: Numerical Application of the Mobility Method , 1971 .

[20]  Filippo M. Lachina,et al.  Thermo-Elasto-Hydrodynamic Analysis of a Crankshaft Journal Bearing , 2006 .

[21]  Yuan Wen-xu.  Application of Method of the Least Squares to the Sliding Bearing Experiment , 2004 .

[22]  Jean Frene,et al.  Cavitation in dynamically loaded journal bearings using mobility method , 1996 .

[23]  Karl-olof Olsson.  Cavitation in Dynamically loaded Bearings , 1965 .

[24]  Jerzy T. Sawicki,et al.  Comparison of Mobility Method and Mass Conservation Method in a Study of Dynamically Loaded Journal Bearings , 2002 .

[25]  Jun Sun,et al.  Hydrodynamic lubrication analysis of journal bearing considering misalignment caused by shaft deformation , 2004 .

[26]  J. Greenwood,et al.  The Contact of Two Nominally Flat Rough Surfaces , 1970 .

[27]  P. K. Goenka,et al.  Dynamically Loaded Journal Bearings: Finite Element Method Analysis , 1984 .

[28]  H. Cheng,et al.  Application of Average Flow Model to Lubrication Between Rough Sliding Surfaces , 1979 .

[29]  Chih Lin,et al.  A mixed-TEHD analysis and experiment of journal bearings under severe operating conditions , 2002 .

[30]  William R. D. Wilson,et al.  Partial Hydrodynamic Lubrication With Large Fractional Contact Areas , 1998 .

[31]  C. J. Hooke,et al.  The Effect of Elastic Distortions on Journal Bearing Performance , 1967 .

[32]  Harish Hirani,et al.  Rapid and globally convergent method for dynamically loaded journal bearing design , 1998 .

[33]  H. Cheng,et al.  An Average Flow Model for Determining Effects of Three-Dimensional Roughness on Partial Hydrodynamic Lubrication , 1978 .