A thermohydrodynamic model was used to study the influence of partial composite coatings on the behavior of plain journal bearings, considering solid elastic deformations and wall slip occurring at the oil film–polytetrafluoroethylene coating interface, and heat conduction between film, coating, interlayer and basement. The purpose is to design partial polytetrafluoroethylene coating to obtain improved bearing behavior based on analyzing the maximum temperature and minimum film thickness in different coating positions (or slip zones). The influences of coating thickness and coating materials (polytetrafluoroethylene, graphite and diamond-like carbon coatings) at different coating positions are also presented. Results show that polytetrafluoroethylene coatings that are completely located in the film convergent region have a small influence on thermal behavior in both nonslip and slip cases. Without slip, a full polytetrafluoroethylene coating can increase the maximum temperature; however, wall slip occurring on a full polytetrafluoroethylene coating surface is helpful in decreasing the maximum temperature when accompanied by a lower minimum film thickness. A thicker polytetrafluoroethylene coating causes bearing seizures more readily. Unlike polytetrafluoroethylene, graphite and diamond-like carbon coatings improve the thermal behavior.
SimmonsJELKnoxRTMossWO. The development of PTFE (polytetrafluoroethylene)-faced hydrodynamic thrust bearings for hydrogenerator application in the United Kingdom. Proc IMechE, Part J: J Engineering Tribology1998; 212: 345–352.
2.
GlavatskihSBFillonM. TEHD analysis of thrust bearings with PTFE-faced pads. J Tribol2005; 128: 49–58.
3.
RezaeiAOstWPaepegemWV, et al. Experimental study numerical simulation of the large-scale testing of polymeric two-dimensional modeling and validation composite bearings van paepegem. Tribol Lett2010; 37: 261–272.
4.
KangoSShuklaDKSharmaN, et al. Implication of surface texture and alip on hydrodynamic fluid film bearings: a comprehensive survey. Tribol Online2020; 15: 265–282.
5.
GlavatskihSB. Evaluating thermal performance of a PTFE-faced tilting pad thrust bearing. J Tribol2003; 125: 319–324.
6.
ChooJHGlovneaRPForrestAK, et al. A low friction bearing based on liquid slip at the wall. J Tribol2007; 129: 611.
7.
KalinMVelkavrhIVižintinJ. The stribeck curve and lubrication design for non-fully wetted surfaces. Wear2009; 267: 1232–1240.
8.
EvansRDCogdellJDRichterGA, et al. Traction of lubricated rolling contacts between thin-film coatings and steel. Tribol Trans2008; 52: 106–113.
9.
GuoLWongPLGuoF. Boundary yield stress and interfacial potential energy barrier in thin film hydrodynamic lubrication. Tribol Lett2016; 62: 7.
10.
XiangYMengYYuT, et al. Measurement of lubricant viscosity and detection of boundary slip at high shear rates. Tribol Int2016; 94: 20–25.
11.
JinJ.Theoretical and experimental research of elasto-metal-plastic (EMP) journal bearings. Doctoral thesis, Shanghai University, China, 2005.
12.
RaoTVVLNRaniAMANagarajanT, et al. Analysis of slider and journal bearing using partially textured slip surface. Tribol Int2012; 56: 121–128.
13.
ZhangHLiuYHafeziM, et al. A distribution design for circular concave textures on sectorial thrust bearing pads. Tribol Int2019; 149: 105733.
14.
PowerHHibberdSBaileyNY, et al. Dynamics of a high speed coned thrust bearing with a Navier slip boundary condition. J Eng Math2016; 97: 1–24.
15.
TauviqirrahmanMIsmailRJamariJ, et al. Combined effect of texturing and boundary slippage in lubricated sliding contacts. Tribol Int2013; 66: 274–281.
MaGJWuCWZhouP. Influence of wall slip on the dynamic properties of a rotor-bearing system. Tribol Trans2008; 51: 204–212.
18.
LvFRaoZTaN, et al. Mixed-lubrication analysis of thin polymer film overplayed metallic marine stern bearing considering wall slip and journal misalignment. Tribol Int2017; 109: 390–397.
19.
SpikesHGranickS. Equation for slip of simple liquids at smooth solid surfaces. Langmuir2003; 19: 5065–5071.
20.
IsmailSSarangiM. Effects of texture shape and fluid–solid interfacial slip on the hydrodynamic lubrication performance of parallel sliding contacts. Proc IMechE, Part J: J Engineering Tribology2014; 228: 382–396.
21.
CuiSZhangCFillonM, et al. Optimization performance of plain journal bearings with partial wall slip. Tribol Int2020; 145: 106137.
22.
ZhangHHuaMDongG, et al. Boundary slip surface design for high speed water lubricated journal bearings. Tribol Int2014; 79: 32–41.
23.
MaGJWuCWZhouP. Wall slip and hydrodynamics of two-dimensional journal bearing. Tribol Int2007; 40: 1056–1066.
24.
SenatoreARaoTVVLN. Partial slip texture slider and journal bearing lubricated with Newtonian fluids: a review. J Tribol2018; 140: 040801.
25.
RaoTVVLN. Analysis of single-grooved slider and journal bearing with partial slip surface. J Tribol2010; 132: 014501.
26.
FortierAESalantRF. Numerical analysis of a journal bearing with a heterogeneous slip/no-slip surface. J. Tribol2005; 127: 820–825.
27.
KimJPalazzoloAGadangiRK. TEHD analysis for tilting-pad journal bearings using upwind finite element method. Tribol Trans1994; 37: 771–783.
28.
WodtkeMWasilczukM. Evaluation of apparent Young’s modulus of the composite polymer layers used as sliding surfaces in hydrodynamic thrust bearings. Tribol Int2016; 97: 244–252.
29.
ZhouJBlairBArgiresJ, et al. Experimental performance study of a high speed oil lubricated polymer thrust bearing. Lubricants2015; 3: 3–13.
30.
LanPMeyerJLVaezianB, et al. Advanced polymeric coatings for tilting pad bearings with application in the oil and gas industry.Wear2016; 354: 10–20.
31.
BoncompainRFillonMFreneJ. Analysis of thermal effects in hydrodynamic bearings. J Tribol1986; 108: 219–224.
32.
FillonMGlavatskihSB. PTFE-faced centre pivot thrust pad bearings factors affecting TEHD performance. Tribol Int2008; 41: 1219–1225.
33.
MahieuxCA. Experimental characterization of the influence of coating materials on the hydrodynamic. J Tribol2005; 127: 73–92.
34.
EttlesCMKnoxRTFergusonJH, et al. Test results for PTFE-faced thrust pads, with direct comparison against Babbitt-faced pads and correlation with analysis. J Tribol2003; 125: 814–823.
HabchiWEyheramendyDVergneP, et al. Stabilized fully-coupled finite elements for elastohydrodynamic lubrication problems. Adv Eng Softw2012; 46: 4–18.
37.
KucinschiBFillonMFreneJ, et al. A transient thermoelastohydrodynamic study of steadily loaded plain journal bearings using finite element method analysis. J Tribol2000; 122: 219–226.
38.
PierreIFillonM. Influence of geometric parameters and operating conditions on the thermohydrodynamic behaviour of plain journal bearings. Proc IMechE, Part J: J Engineering Tribology2000; 214: 445–457.
39.
RadeM. Dynamic analysis of an inertial foundation model. Int J Solids Struct1972; 8: 1353–1372.
40.
FurukawaTKomiyaK. An upwind Galerkin finite element analysis of linear induction motors. IEEE Trans Magn1990; 26: 662–665.
41.
PapBFillonMGuillemontMet al. Experimental and numerical analysis on the seizure of a carbon-filled PTFE central groove journal bearing during start-up period. Lubricants2018; 6: 14.
