李英杰1, 赵广1, 吴学深2, 李坚3, 袁巍3, 梅庆3
LI Yingjie1, ZHAO Guang1, WU Xueshen2, LI Jian3, YUAN Wei3, MEI Qing3
关键词: 花键, 自激振动, 稳定性, 摩擦阻尼, 转子动力学
Abstract: In high-power and high-speed rotor systems represented by aerospace power transmission, splines play an irreplaceable role. Due to the limitation of structure, weight and space of the aviation power transmission rotor, many splines can only operate in grease lubricated or non-lubricated environment. The load and service environment of the spline cause it to be in a state of complex contact and fretting for a long time. When the rotor runs after the critical speed, the spline boundary lubrication or misalignment state may induce the spline’s self-excited vibration. When spline self-excited vibration occurs, there will be low-frequency amplitude, the low-frequency amplitude is high, and the energy is large, which is easy to cause serious damage or accidents. Domestic and foreign scholars have carried out certain research work on spline self-excited vibration, and formed a consensus that internal friction damping causes spline self-excited vibration, and proposed measures to alleviate spline self-excited vibration. This paper, by reviewing the research history and current situation of spline friction damping and spline-rotor system self-excited vibration, summarizes the characteristics and influencing factors of spline self-excited vibration. Then we try to give the development trend of spline friction damping and self-excited vibration, and provide a reference for the stable and reliable service of the spline in the aviation power transmission.
Key words: spline, self-excited vibration, stability, friction damping, rotor dynamics