以D1842926航空发动机主轴滚子轴承典型工况为算例，基于拟动力学分析结果，获得滚动体与套圈之间的接触微区运动和受力状态，分别用Hamrock-Dowson(H-D)拟合公式，Wilson-Sheu(W-S)热修正公式和热弹流数值法得到最小膜厚，并与试验测试数据进行了对比，结果表明，H-D最小膜厚误差非常大，W-S热修正最小膜厚比H-D误差要小，但误差仍在40%以上，文中数值结果与试验数据较为一致，误差10%以内；对比不同速度下三种算法的最小膜厚分布，低速时三者较为一致，随着速度的提高，H-D最小膜厚误差越来越大，而W-S最小膜厚在速度增大到一定程度后反而降低；随着径向载荷的增大，润滑膜压力增大，膜厚减小，两端的压力略高于中间；随着转速增大，润滑膜膜厚增大，压力基本没有变化。
Taking type D1842926 aero-engine mainshaft roller bearing under typical operating conditions as cases, based on quasi-dynamic results, the motion and force at micro-contact region are obtained, and the minimum film thickness(MFT) are calculated with H-D formula, W-S formula and thermal elastohydrodynamic lubrication (TEHL) analysis, the MFT of the 3 algorithms are compared with testing results, which indicate H-D MFT have a large error, though the error of W-S MFT is smaller than that with H-D formula, the error is still above 40%, the numerical analysis results show a well agreement with testing data and the error is within10%. The MFT under different velocities are compared with 3 algorithms, which show well agreements under low velocity, but the error of H-D MFT becomes larger with the increasing velocity, and W-S MFT become smaller as the velocity reaches a certain value; The global film pressure increase and the thickness decrease with the increase of radial load, the pressure in both ends are a little higher than that in the middle; The film thickness increase with the increase of velocity, but the pressure keep unchanged.
[1] 叶振环. 航空发动机高速滚动轴承动力学行为研究[D]. 哈尔滨： 哈尔滨工业大学， 2013. YE Zhenhuan. Research on dynamic behavior of high-speed rolling bearing in aeroengines[D]. Harbin：Harbin Institute of Technology，2013.
[2] 王黎钦，陈观慈. 航空轴承非圆滚道的预变形加工技术[J]. 机械工程学报，2005，41(9)：223-227. WANG Liqin，CHEN Guanci. Pre-deformation machining technology of the noncircular raceway of aero roller bearings[J]. Chinese Journal of Mechanical Engineering，2005，41(9)：223-227.
[3] 崔立，王黎钦，郑德志，等. 航空发动机高速滚子轴承动态特性分析[J]. 航空学报，2008，29(2)：492-498. CUI Li，WANG Liqin，ZHENG Dezhi，et al. Analysis on dynamic characteristics of aero-engine high-speed roller bearings[J]. Acta Aeronautica et Actronautica Sinica，2008，29(2)：492-498.
[4] 胡绚，罗贵火，高德平. 圆柱滚子中介轴承拟静力学分析[J]. 航空动力学报，2006，21(6) ：1069-1074. HU Xuan ，LUO Guihuo ，GAO Deping. Quasi-static analysis of cylindrical roller intershaft bearing[J]. Journal of Aero-space Power，2006，21(6)：1069-1074.
[5] 邓四二，付金辉，王燕霜，等. 航空发动机滚动轴承双转子系统动态特性分析[J]. 航空动力学报，2013，28(1)：195-204. DENG sier，FU jinhui，WANG Yanshuang，et al. Analysis on dynamic characteristics of aero-engine rolling bearing/dual-rotor system[J]. Journal of Aerospace Power，2013，28(1)：195-204.
[6] 梁鹤，郭丹，雒建斌. 高速下弹流润滑膜厚性质的试验与数值计算结果比较[C]//十一届全国摩擦学大会，兰州，2013. LIANG He，GUO Dan，LUO Jianbin. Experimental investigation and numerical results comparison of elastohydrodynamic (EHD) film thickness behavior at high speeds[C]//The 11th National Tribology Conference，2013，Lanzhou，2013.
[7] HAMROCK B J，DOWSON D. Isothermal elastohydrodynamic lubrication of point contacts，Part III-Fully flooded results[J]. ASME Journal of Lubrication Technology，1977，99(2)：261-276.
[8] MURCH L E，WILSON W R D. A thermal elastohydrodynamic inlet zone analysis[J]. Journal of Lubrication Technology，1975，97(2)：212-216.
[9] WILSON W R D，SHEU S. Effect of inlet shear heating due to sliding on elastohydrodynamic film thickness[J]. Transactions of the ASME，1983，105(2)：187-188.
[10] 翟文杰，张鹏顺. 全膜点接触热弹流的油膜特性及最小膜厚热修正公式[J]. 机械设计，1995(7)：27-29. ZHAI Wenjie，ZHANG Pengshun. Oil film properties and minimum film thickness thermal modified formula of whole point contact thermal elastohydrodynamic[J]. Mechanical Design，1995(7)：27-29.
[11] LUBRECHT A A，VENNER C H，COLIN F. Film thickness calculation in elastohydrodynamic lubricated line and elliptical contacts[J]. Journal of Engineering Tribology，2009，223(3)：511-515.
[12] CANZI A，VENNER C H，LUBRECHT A A. Film thickness prediction in elastohydrodynamically lubricated elliptical contact[J]. Journal of Engineering Triboloy，2010，224(9)：917-923.
[13] 崔立. 航空发动机高速滚动轴承及转子系统的动态性能研究[D]. 哈尔滨：哈尔滨工业大学，2008. CUI Li. Research on dynamic performances of high-speed rolling bearing and rotor system of aeroengine[D]. Harbin：Harbin Institute of Technology，2008.
[14] YANG P R，WEN S Z. Generalized Reynolds equation for non-Newtonian thermal elastohydrodynamic lubrication[J]. ASME Journal of Tribology，1990，112：631-636.
[15] 刘晓玲，杨沛然. 有限长滚子线接触热弹流润滑分析[J]. 摩擦学学报，2002，22(4)：296-299. LIU Xiaoling，YANG Peiran. Analysis for finite line contacts of thermal elastohydrodynamic lubrication [J]. Tribology，2002，22(4)：296-299.
[16] 张鹏顺. 航空发动机三种典型主轴轴承的弹流油膜状态的测试研究[C]//第五届全国擦学学术会议，武汉，1992. ZHANG PengShun. Aeroengine elastohydrodynamic lubrication research on three typical spindle bearing[C]// The 5th National Tribology Conference，Wuhan，1992.
