VIBRATION CHARACTERISTICS OF HIGH-SPEED BALL BEARING OF AERO-ENGINES
Ball bearing is widely used as rotor supporting. It is a nonnegligible source of vibration in aero-engines. The vibration characteristics of the high-speed ball bearing are studied in this paper. Bearing kinematics theory is applied to discuss the basic characteristics of ball bearings. The vibration factors caused by ball bearings are analyzed, and then the vibration model of ball bearings is set up. The effect of the unbalance, the ball passage vibration, the radial clearance and the surface waviness are considered. It is found that the ball passage vibration is excited by the contact force between the balls and the races. Increasing the ball number can reduce the vibration amplitude. The surface waviness which is caused due to the geometric imperfection of ball bearings is considered as one of the important vibration sources of bearing systems.
aerospace propulsion system ball bearing ball passage vibration surface waviness
TANG Yun-bing LUO Gui-huo GAO De-ping
College of Energy & Power Engineering, Nanjing University of Aeronautics & Astronautics Nanjing 210016, China
国际会议
昆明
英文
182-187
2006-09-18（万方平台首次上网日期，不代表论文的发表时间）