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Keywords: hydrodynamics
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Journal Articles
Article Type: Research Papers
J. Tribol. October 2021, 143(10): 101801.
Paper No: TRIB-20-1399
Published Online: February 5, 2021
...: jonas.marheineke@imse.rwth-aachen.de Email: sebastien.piton@jeumontelectric.com Contributed by the Tribology Division of ASME for publication in the J ournal of T ribology . 01 09 2020 23 12 2020 23 12 2020 05 02 2021 materials hydrodynamics PEEK bearing design...
Journal Articles
Article Type: Research Papers
J. Tribol. October 2011, 133(4): 042203.
Published Online: October 10, 2011
...Christophe Minet; Noël Brunetière; Bernard Tournerie Mechanical seals are commonly used in industrial applications. The main purpose of these components is to ensure the sealing of rotating shafts. Their optimal point of operation is obtained at the boundary between the mixed and hydrodynamic...
Journal Articles
Article Type: Research Papers
J. Tribol. October 2011, 133(4): 041701.
Published Online: October 4, 2011
... 04 10 2011 discs (structures) hydrodynamics laminar flow lubrication non-Newtonian flow Figure 2 shows the gapwidth as a sum of a function of time alone and the other a function of the radial co-ordinate. In this case, h 1 ( t ) denotes the volumetric mean gapwidth between...
Journal Articles
Article Type: Research Papers
J. Tribol. October 2011, 133(4): 041001.
Published Online: August 9, 2011
...Dong Zhu; Q. Jane Wang Elastohydrodynamic Lubrication (EHL) is commonly known as a mode of fluid-film lubrication in which the mechanism of hydrodynamic film formation is enhanced by surface elastic deformation and lubricant viscosity increase due to high pressure. It has been an active...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2011, 133(3): 031702.
Published Online: July 28, 2011
...Andreas Almqvist; John Fabricius; Andrew Spencer; Peter Wall Different averaging techniques have proved to be useful for analyzing the effects of surface roughness in hydrodynamic lubrication. This paper compares two of these averaging techniques, namely the flow factor method by Patir and Cheng (P...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2011, 133(3): 031503.
Published Online: July 21, 2011
... deformation elastodynamics hydrodynamics impact (mechanical) lubricating oils lubrication mechanical contact micromechanics point contacts elastohydrodynamic lubrication impact load micro-dimple initial impact gap loading speed moving body mass Tribology is the science...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2011, 133(3): 031301.
Published Online: July 21, 2011
... of the surface. A thrust bearing tribometer was used to compare performance of hydrophilic and hydrophobic surfaces in hydrodynamic lubrication with a mixture of water and glycerol as the lubricant. Hydrophobic surfaces on both runner and bearing were achieved with the deposition of H-DLC films on titanium alloy...
Journal Articles
Article Type: Technical Briefs
J. Tribol. July 2011, 133(3): 034501.
Published Online: June 17, 2011
...Roberto Bassani This chapter deals with a hydrodynamic journal bearing provided with hollow bushings, capable of supporting very high loads, even at low speeds, at which separation between the shaft and the housing’s bushing is induced by a specific self-regulating hydrostatic system. The same...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2011, 133(3): 031501.
Published Online: June 17, 2011
... to vary from 0.01 to 0.8 μ m, and the proportion of the load supported by asperity contact varied from 50% to 0%. 30 12 2010 06 04 2011 17 06 2011 17 06 2011 elastic moduli film flow flow separation flow visualisation hydrodynamics liquid films lubricating oils rheology...
Journal Articles
Article Type: Research Papers
J. Tribol. April 2011, 133(2): 021705.
Published Online: March 23, 2011
... Applied in Hydrodynamic Lubrication ,” Proc. Inst. Mech. Eng., Part J: J. Eng. Tribol. 1350-6501 , 222 ( 7 ), pp. 827 – 841 . 10.1243/13506501JET426 Almqvist , A. , Essel , E. K. , Persson , L. -E. , and Wall , P. , 2007 , “ Homogenization of the Unstationary Incompressible...
Journal Articles
Article Type: Research Papers
J. Tribol. October 2010, 132(4): 041501.
Published Online: October 8, 2010
... 10 2010 cavitation deformation finite element analysis finite volume methods friction hydraulic systems hydrodynamics Poiseuille flow rods (structures) sealing materials viscoelasticity reciprocating seal rod seal hydraulic seal elastohydrodynamics viscoelasticity finite...
Journal Articles
Article Type: Technical Briefs
J. Tribol. October 2010, 132(4): 044502.
Published Online: September 23, 2010
... by applying the simple model based on the single main bearing housing to calculate the elastic deformation of main bearing surface. 14 11 2009 16 07 2010 23 09 2010 23 09 2010 elastic deformation elastodynamics heat engines hydrodynamics lubrication machine bearings shafts...
Journal Articles
Article Type: Technical Briefs
J. Tribol. July 2010, 132(3): 034501.
Published Online: June 24, 2010
... for surface roughness and shear thinning is treated to predict the pressure and surface asperity effect in an EHL line-contact. The unknown in the Reynolds equation is the hydrodynamic pressure instead of the total pressure to ensure that the pressure boundary condition at the outlet is properly posed...
Journal Articles
Article Type: Research Papers
J. Tribol. April 2010, 132(2): 022001.
Published Online: April 6, 2010
... of the lubricant changes as the geometry of the texture is decreased toward the nanoscale. This work uses existing scale dependent lubrication theories to model the hydrodynamic lubrication of textured surfaces in attempt to predict how nanoscale textures will perform. The theoretical results show that the scale...
Journal Articles
Article Type: Research Papers
J. Tribol. April 2010, 132(2): 021502.
Published Online: April 6, 2010
... systems by means of the finite element method. 16 02 2009 26 01 2010 06 04 2010 06 04 2010 elasticity finite element analysis hydrodynamics lubrication machine bearings mechanical contact surface roughness surface topography conformal-contact elastohydrodynamic...
Journal Articles
Article Type: Technical Briefs
J. Tribol. April 2010, 132(2): 024504.
Published Online: April 6, 2010
.... This study starts with a known solution to the Laplace equation in a cylindrical coordinate system, which is in the form of an infinite summation. A set of analytical solutions to pressure, load capacity, flow rate, and torque loss is derived in this paper for hydrodynamic lubrication problems encountered...
Journal Articles
Article Type: Research Papers
J. Tribol. April 2010, 132(2): 021702.
Published Online: March 25, 2010
... 03 2010 differential equations elasticity elastodynamics finite element analysis friction hydrodynamics liquid films machine bearings oils rotors valves tilting-pad journal bearings control elastohydrodynamics vibration During the last 4 decades, the dynamics...
Journal Articles
Article Type: Technical Briefs
J. Tribol. January 2010, 132(1): 014502.
Published Online: November 13, 2009
...Yaser Bastani; Marcio de Queiroz A new method for determining a closed-form expression for the hydrodynamic forces in finite-length plain journal bearings is introduced. The method is based on applying correction functions to the force models of the infinitely long (IL) or infinitely short...
Journal Articles
Article Type: Research Papers
J. Tribol. January 2010, 132(1): 012102.
Published Online: November 12, 2009
...H. Sojoudi; M. M. Khonsari This paper presents a simple approach to predict the behavior of friction coefficient in the sliding lubricated point contact. Based on the load-sharing concept, the total applied load is supported by the combination of hydrodynamic film and asperity contact. The asperity...
Journal Articles
Article Type: Research Papers
J. Tribol. January 2010, 132(1): 011801.
Published Online: November 10, 2009
... computational fluid dynamics emulsions hydrodynamics liquid films lubricants oils pH rolling shear strength viscosity water emulsion phase inversion effective viscosity Reynolds equation hydrodynamic lubrication The oil-in-water emulsion owns the advantages of cooling ability...