不同类型织构的动压润滑性能评价方法及实验验证
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摘要
基于雷诺方程建立牛顿流体润滑条件下单一织构表面动压润滑理论模型,求解不同类型织构表面动压润滑性能,计算织构表面偏态和峰值,从偏态和峰值角度分析织构类型对动压润滑性能的影响;开展压裂泵模拟工况下柱塞-密封橡胶摩擦副单元摩擦学实验,研究不同织构类型对柱塞密封副摩擦磨损性能的影响。实验结果验证基于偏态和峰值分析织构类型对动压润滑性能影响的合理性。仿真结果表明,相同条件下,对于不同类型表面织构,表面偏态越小、峰值越大,其动压润滑性能越好;研究的3种织构中,圆形织构表面动压润滑性能最优,其次分别为椭圆织构表面和条形织构表面。与仿真结果类似,实验研究表明,圆形织构润滑减磨性能最优,其次为椭圆织构、条形织构。
The hydrodynamic lubrication theoretical model of single textured surface based on Reynolds equation under the lubrication condition of Newtonian fluid was established,and finite difference method was used to study the hydrodynamic lubrication performance of different surface texturing. The skewness and kurtosis of textured surface were calculated,and the influence of texture type on hydrodynamic lubrication performance was analyzed based on the skewness and kurtosis of textured surface. The unit tribology experiment of the plunger-rubber seal pairs of fracturing pump was carried out to study the effect of texture type on tribological properties of textured surface. The experimental results verify the rationality of analyzing the influence of texture type on lubrication performance from the perspective of skewness and kurtosis. The simulation results show that under the same condition,for different types of surface texture,the smaller the skewness and the higher the kurtosis,the better the dynamic lubrication performance of textured surface. For the three kinds of texture studied,the circular textured surface has the best hydrodynamic lubrication performance,followed by ellipse textured surface and bar textured surface. Similar to the simulation results,the experimental results indicate that the circular textured surface has the best properties of friction reducing and antiwear,followed by ellipse textured surface and bar textured surface.
The hydrodynamic lubrication theoretical model of single textured surface based on Reynolds equation under the lubrication condition of Newtonian fluid was established,and finite difference method was used to study the hydrodynamic lubrication performance of different surface texturing. The skewness and kurtosis of textured surface were calculated,and the influence of texture type on hydrodynamic lubrication performance was analyzed based on the skewness and kurtosis of textured surface. The unit tribology experiment of the plunger-rubber seal pairs of fracturing pump was carried out to study the effect of texture type on tribological properties of textured surface. The experimental results verify the rationality of analyzing the influence of texture type on lubrication performance from the perspective of skewness and kurtosis. The simulation results show that under the same condition,for different types of surface texture,the smaller the skewness and the higher the kurtosis,the better the dynamic lubrication performance of textured surface. For the three kinds of texture studied,the circular textured surface has the best hydrodynamic lubrication performance,followed by ellipse textured surface and bar textured surface. Similar to the simulation results,the experimental results indicate that the circular textured surface has the best properties of friction reducing and antiwear,followed by ellipse textured surface and bar textured surface.
引文
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[24]GADELMAWLA E S,KOURA M M,MAKSOUD T M A,et al.Roughness parameters[J].Journal of Materials Processing Technology,2002,123(1):133-145.
[2]DOBRICA M,FILLON M.Reynolds’model suitability in simulating Rayleigh step bearing thermohydrodynamic problems[J].Tribology Transactions,2005,48(4):522-530.
[3]HAJJAM M,BONNEAU D.A transient finite element cavitation algorithm with application to radial lip seals[J].Tribology International,2007,40(8):1258-1269.
[4]ETSION I.Modeling of surface texturing in hydrodynamic lubrication[J].Friction,2013,1(3):195-209.
[5]AHMMED K M,GRAMBOW C,KIETZIG A M.Fabrication of micro/nano structures on metals by femtosecond laser micromachining[J].Micromachines,2014,5(4):1219-1253.
[6]PARREIRA J G,GALLO C A,COSTA H L.New advances on maskless electrochemical texturing(MECT)for tribological purposes[J].Surface and Coatings Technology,2012,212:1-13.
[7]BYUN J W,SHIN H S,KWON M H,et al.Surface texturing by micro ECM for friction reduction[J].International Journal of Precision Engineering and Manufacturing,2010,11(5):747-753.
[8]PETTERSSON U,JACOBSON S.Textured surfaces in sliding boundary lubricated contacts-mechanisms,possibilities and limitations[J].Tribology-Materials,Surfaces&Interfaces,2007,1(4):181-189.
[9]KIM B,CHAE Y H,CHOI H S.Effects of surface texturing on the frictional behavior of cast iron surfaces[J].Tribology International,2014,70:128-135.
[10]SHEN X H,TAO G C.Tribological behaviors of two micro textured surfaces generated by vibrating milling under boundary lubricated sliding[J].The International Journal of Advanced Manufacturing Technology,2015,79(9/10/11/12):1995-2002.
[11]BRIZMER V,KLIGERMAN Y,ETSION I.A laser surface texture parallel thrust bearing[J].Tribology Transactions,2003,46(3):397-403.
[12]GRADON W,KOSZELA W,PAWLUS P,et al.Improving tribological behavior of piston ring-cylinder liner frictional pair by liner surface texturing[J].Tribology International,2013,61:102-108.
[13]RANJAN R.Laser texturing for low-flying-height media[J].Journal of Applied Physics,1991,69(8):5745-5747.
[14]TANG W,ZHOU Y,ZHU H,et al.The effect of surface texturing on reducing the friction and wear of steel under lubricated sliding contact[J].Applied Surface Science,2013,273:199-204.
[15]BRAUN D,GREINER C,SCHNEIDER J,et al.Efficiency of laser surface texturing in the reduction of friction under mixed lubrication[J].Tribology International,2014,77:142-147.
[16]TALA-IGHIL N,MASPEYROT P,FILLON M,et al.Hydrodynamic effects of texture geometries on journal bearing surfaces[C]//Proceedings of 10th International Conference on Tribology ROTRIB’07.Bucharest,Romania:ITC,2007.
[17]YU H,WANG X,ZHOU F.Geometric shape effects of surface texture on the generation of hydrodynamic pressure between conformal contacting surfaces[J].Tribology Letters,2010,37(2):123-130.
[18]QIU M,DELIC A,RAEYMAEKERS B.The effect of texture shape on the load-carrying capacity of gas-lubricated parallel slider bearings[J].Tribology Letters,2012,48(3):315-327.
[19]SHEN C,SUN Z,CHEN D,et al.Developing urinary metabolomic signatures as early bladder cancer diagnostic markers[J].Omics:A Journal of Integrative Biology,2015,19(1):1-11.
[20]SEDLACEK M,VILHENA L M S,PODGORNIK B,et al.Surface topography modelling for reduced friction[J].Strojniski Vestnik-Journal of Mechanical Engineering,2011,57(9):674-680.
[21]PODGORNIK B,SEDLACEK M.Surface texturing effect,characterization and optimization for boundary and mixed lubrication[C]//Proceedings of the ASME/STLE 2011 International Joint Tribology Conference.Los Angeles:ASME/STLE,2012:59-61.
[22]SEDLACˇEK M,GREGOR CˇI CˇP,PODGORNIK B.Use of the roughness parameters Sskand Skuto control friction-a method for designing surface texturing[J].Tribology Transactions,2017,60(2):260-266.
[23]REYNOLDS O.On the theory of lubrication and its application to Mr.Beauchamp Tower’s experiments,including an experimental determination of the viscosity of olive oil[J].Proceedings of the Royal Society of London,1886,40(242/243/244/245):191-203.
[24]GADELMAWLA E S,KOURA M M,MAKSOUD T M A,et al.Roughness parameters[J].Journal of Materials Processing Technology,2002,123(1):133-145.