大滑速下合成润滑油的摩擦牵引力研究

本文采用部分弹性流体动力润滑理论和Ree—Eyring流变学模型研究了国产航空合成润滑油的摩擦牵引特性,获得了合成润滑油的牵引力系数随载荷、速度、材料、润滑油粘度及环境温度变化的规律。

TRACTION CHARACTERISTICS OF SYNTHETIC LUBRICANTS AT HIGH SLIDING SPEED CONTACTS

The traction characteristics of synthetic lubricants at high sliding speedcontacts are studied according to the thermal partial elastohydrodynamic lubrication theory for consideration of surface roughness effect and the Ree-Eyring theological model for mirroring the non-Nowtonian behavior of the lubricant. The analysis program developed incorporates a computational algorithm which can efficiently and accurately find out the pressure and temperature distributions and determine the traction coefficient of synthetic lubricants. The variations of the traction coefficient of synthetic lubricants with the load, rolling and sliding speed, lubricant viscosity and ambiance temperature are obtained and the comparison between the calculated results presented in current work and the experimental results of ref. 2] is also shown. The method adopted in present investigation is instructive for dynamic study of aviation high-speed rolling bearings.