关键词: 大滑滚比； 线接触； 摩擦； 弹流

Abstract:

A series of EHL friction experiments under line contact and big slide-roll ratio conditions were conducted on a self-modified JPM-1 tribo-tester. Friction coefficients under various operation conditions were measured. A series of results which reflect the influence of working conditions on friction coefficient were obtained. The results show that when load is small, friction coefficient is sensitive to the load and the rolling speed; with increase of load, the sensitivity of friction coefficient to the load and the rolling speed reduces rapidly. Under big slide-roll ratio conditions, the variation amplitude of friction coefficient is small. As the load or rolling speed increases, the friction coefficient decreases, the rate of declination gradually slows down. 

Key words: big slide-roll ratio, line contact, friction, EHL(elastohydrodynamic lubrication)