织构分布影响钻头轴承减磨性能的仿真和实验研究
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摘要
针对织构分布角度对织构润滑减磨性能影响的问题,基于Reynolds方程建立单一织构全油膜润滑条件下的动压润滑理论模型,求解不同分布角度下织构表面动压润滑性能,并计算织构表面空化单元数目,从织构表面空化效应角度分析织构分布角度对织构动压润滑性能的影响。开展牙轮钻头滑动轴承模拟工况下单元摩擦学实验,通过对比摩擦副试样表面摩擦学性能分析织构分布角度的影响。数值仿真结果表明,织构表面空化离散单元数目越多,其动压润滑性能越好;单元实验研究结果则表明,基于捕获磨屑、减小二次磨损的作用机制,织构单元垂直于滑移方向的边长越长,织构表面的摩擦磨损性能越好。
In order to study the influence of texture distribution angle on antifriction performance,the hydrodynamic lubrication theoretical model of single texture was established based on the Reynolds equation.The number of cavitation units was calculated,and the influence of texture distribution angle on hydrodynamic lubrication performance was analyzed from the perspectives of cavitation effect.The unit tribology experiment under the simulation working condition of rock bit sliding bearing was carried out,and the influence of texture distribution angle was analyzed by comparing the surface tribological properties of the friction pairs.The simulation results show that,the more the number of cavitation discrete unit of textured surface,the better the hydrodynamic lubrication performance. Unit tribology experiment results show that based on the mechanism of capture chip and reducing secondary wear of the textured surface,the longer the texture length of vertical sliding direction,the better the tribological properties.
In order to study the influence of texture distribution angle on antifriction performance,the hydrodynamic lubrication theoretical model of single texture was established based on the Reynolds equation.The number of cavitation units was calculated,and the influence of texture distribution angle on hydrodynamic lubrication performance was analyzed from the perspectives of cavitation effect.The unit tribology experiment under the simulation working condition of rock bit sliding bearing was carried out,and the influence of texture distribution angle was analyzed by comparing the surface tribological properties of the friction pairs.The simulation results show that,the more the number of cavitation discrete unit of textured surface,the better the hydrodynamic lubrication performance. Unit tribology experiment results show that based on the mechanism of capture chip and reducing secondary wear of the textured surface,the longer the texture length of vertical sliding direction,the better the tribological properties.
引文
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[26]王国荣.牙轮钻头浮动套轴承工作机理研究[D].成都:西南石油学院,2004.
[2]VINCENT C,MONTEIL G,BARRIERE T,et al.Control of the quality of laser surface texturing[J].Microsystem Technologies,2008,14(9/10/11):1553-1557.
[3]VILHENA L M,SEDLAC EK M,PODGORNIK B,et al.Surface texturing by pulsed Nd:YAG laser[J].Tribology International,2009,42(10):1496-1504.
[4]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.
[5]KUMAR S,SINGH R,SINGH T P,et al.Surface modification by electrical discharge machining:a review[J].Journal of Materials Processing Technology,2009,209(8):3675-3687.
[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]ADAMS D P,VASILE M J,MAYER T M,et al.Focused ion beam techniques for fabricating geometrically-complex components and devices[R].Report for Sandia.Report no.SAND2004-0911,2004.
[8]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.
[9]QU N,CHEN X,LI H,et al.Electrochemical micromachining of micro-dimple arrays on cylindrical inner surfaces using a dryfilm photoresist[J].Chinese Journal of Aeronautics,2014,27(4):1030-1036.
[10]DOBRICA M B,FILLON M.About the validity of Reynolds equation and inertia effects in textured sliders of infinite width[J].Proceedings of the Institution of Mechanical Engineers,Part J:Journal of Engineering Tribology,2009,223(1):69-78.
[11]ETSION I.Modeling of surface texturing in hydrodynamic lubrication[J].Friction,2013,1(3):195-209.
[12]QIU Y,KHONSARI M M.On the prediction of cavitation in dimples using a mass-conservative algorithm[J].Journal of Tribology,2009,131(4):041702.1-11.
[13]DOBRICA M,FILLON M.Reynolds’model suitability in simulating Rayleigh step bearing thermohydrodynamic problems[J].Tribology Transactions,2005,48(4):522-530.
[14]HAJJAM M,BONNEAU D.A transient finite element cavitation algorithm with application to radial lip seals[J].Tribology International,2007,40(8):1258-1269.
[15]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.
[16]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.
[17]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.
[18]KRUPKA I,HARTL M,SVOBODA P.Effects of surface topography on lubrication film formation within elastohydrodynamic and mixed lubricated non-conformal contacts[J].Proceedings of the Institution of Mechanical Engineers,Part J:Journal of Engineering Tribology,2010,224(8):713-722.
[19]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.
[20]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.
[21]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.
[22]WANG X L,HSU S M.An integrated surface technology for friction control:a new paradigm effects of geometric shapes on friction[C]//Proceedings of The 4th China International Symposium on Tribology.Xi’an:Northwest Polytechnical University Press,2004:12-20.
[23]ADJEMOUT M,BRUNETIRE N,BOUYER J.Improving the performance of a mechanical seal by surface texturing[C]//Proceedings of 2014 STLE Annual Meeting&Exhibition.Florida:STLE,2014.
[24]COSTA H L,HUTCHINGS I M.Reciprocating lubricated sliding on textured steel surfaces[J].Ciência&Tecnologia dos Materiais,2006,18(1/2):79-86.
[25]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.
[26]王国荣.牙轮钻头浮动套轴承工作机理研究[D].成都:西南石油学院,2004.