新型航空润滑油油膜拖动力计算研究
Traction calculation of a new aviation lubricating oil
-
摘要: 在自制的试验装置上测量了新型航空润滑油油膜拖动力;给出了高剪切率弹流润滑下的Ery-ing特征应力、极限剪切应力、剪切弹性模量的新型航空油流变参数拟合计算式;确定了该油本构方程;建立了该油油膜拖动力计算式, 并进行了试验验证.试验结果表明:该油在试验条件下表现为粘弹性;拖动力的理论计算值与试验测量值相当吻合.给出的拖动力计算方法可用于指导润滑分析领域的工程计算.Abstract: The traction of a new aviation lubricating oil was measured on a self-made test rig.The calculating formulae of the rheological parameters of the oil such as Erying characteristic stress,shear stress limit,and shear elastic modulus were given under the condition of the high shear rate in elasto-hydrodynamic lubrication.Then the constitutive equation of this oil was determined,and the calculating formulae of the oil traction was given and verified by test.The experimental results show that the behavior of new aviation lubricating oil behaves as the visco-elastic fluid,the calculated traction coefficients agree fairly well with the measured data.The method of the traction force calculation can be used to guide the lubrication analysis in engineering computation.
-
[1] Dyson A.Flow properties of mineral oils in elastohydrodynamic lubrication[R].Phil Trans Roy Soc London,1965,A258:529-533. [2] Lee R T,Hamrock B T.A non-newtonian fluid model for elastohydrodynamic lubrication of rectangular contacts[R].Proc of the 5# International Congress on Tribology,1989. [3] 王晓力,桂长林,朱廷斌,等.国产润滑脂流变参数的确定与研究[J].摩擦学学报,1997,17(3):232-235.WANG Xiaoli,GUI Changlin,ZHU Tingbin,et al.Study on rheological parameters of domestic lubricating grease[J].Tribology,1997,17(3):232-235. [4] Bair S,Qureshi F.Accurate measurements of pressure-viscosity behavior in lubricants[J].Tribology Transaction,2002,45(3):390-396. [5] 杨伯原,苏冰,邓四二,等.高速润滑脂7007和7018拖动特性的研究[J].中国机械工程,2002,13(20):1786-1796.YANG Boyuan,SU Bing,DENG Sier,et al.Study on elastohydrodynamic traction characteristics of No.7007 and No.7018 high speed lubricating grease[J].China Mechanical Engineering,2002,13(20):1786-1796. [6] Kim H J,Ehret P,Dowson D,et al.Thermal elastohydrodynamic analysis of circular contacts-Part II:Non-newtonian model[J].Proceedings of the Instituion of Mechanical Engineers.Part J,Journal of Engineering Tribology,2001,215:353-362. [7] Evans C R,Johnson K L.The rheology properties of elastohydrodynamics lubricants[J].Proc.Instn Mech.Engrs,Part C,1986,200(c5):303-312. [8] 王燕霜,杨伯原,王黎钦.HKD-1型航空润滑油特征剪切应力及有效粘压系数的确定研究[J].摩擦学学报,2006,26(1):68-76.WANG Yanshuang,YANG Boyuan,WANG Liqin.Determination of erying shear stress and pressure-viscosity coefficient for HKD-1aviation lubricating oil[J].Tribology,2006,26(1):68-76. [9] Ohno N,Kuwano N,Bulk H F.Modulus of solidified oil at high pressure as predominant factor affecting life of thrust ball bearings[J].Tribology Transactions,1995,38:285-292. [10] Cann P M,Spikes H A.Determination of the shear stress of the lubricants in elastohydrodynamic contacts[J].STLE,1989,32(3),414-442. [11] Fang N.Modeling and experimentation of the rheological behaviour of liquid lubricants in elastohydrodynamic lubrication[D].PhD thesis,department of mechanical engeering,The Pennsylvania state university,1999.
点击查看大图
计量
- 文章访问数: 1824
- HTML浏览量: 1
- PDF量: 490
- 被引次数: 0