有限长线接触混合润滑特性研究

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Abstract The mixed elastohydrodynamic lubrication (mixed-EHL) of finite line contact is studied by considering the regular surface roughness. The effects of the wavelength, amplitude and orientation angle of surface roughness and working conditions are obtained. The results show that the numerical model is simple and robust. The lubrication state of the middle of contact line firstly changes during the wavelength goes up. The increase in amplitude increases the pressure fluctuation and hence enhances the edge effect. The working conditions have obvious influence on the lubrication state. During the region of the lubrication state transition, the characteristic parameters change significantly. The effect of orientation angle on mixed lubrication is significant. The 0 degree of orientation angle is advantageous to finite line mixed-EHL, but 45 degree is worst.

Key words： finite line contact mixed EHL roughness orientation angle

Received: 09 April 2015 Published: 15 July 2016

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2016/V35/I14/96

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