Rotor speed effect study on plain bearing dynamics coefficients
Ma wensheng1,2,3, Chen Zhaobo2, Jiao Yinghou2, Kirk R.G.3
1. AVIC Shenyang Aeroengine Research Institute, Shenyang 110015, China;2. School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 15001, China3. Rotor Dynamics Laboratory, Virginia Tech, Blacksburg, VA 24061, USA
Abstract：Short-bearing oil film force model have been built in this paper. Rotor speed of bearing dynamics characteristics have been studied, which got the influence factor on eccentricity, the minimum film thickness, maximum film pressure, friction power, temperature, critical journal quality, stiffness coefficient, damping coefficient, 2D and 3D film pressure. There exists a critical rotor speed when analyze 3D film pressure. The maximum film pressure has great effect when rotor speed number is below the critical speed, and the maximum film pressure has little effect when rotor speed is higher than the critical speed.
2014, Vol. 33 
