一、前言在现代工业中,旋转机械使用日益广泛,并有向高速化,大型化发展的趋势,例如大型汽轮发电机组,燃汽轮机组,工业汽轮机组,透平压缩机组,及离心泵等等。在这些高速机器中,转子系统的振动和稳定性具有重要意义。这是因为随着旋转机器的高速化、大型化,在结构上广泛采用柔性转子。有的转子是超一阶临界转速,有的是超二阶临界转速运行。转子系统的振动和稳定性问题是保证机器可靠性和寿命的重要技术关键问 I. INTRODUCTION In modern industry, the use of rotating machinery is becoming more widespread and there is a tendency toward high-speed and large-scale development. For example, large-scale steam turbine generators, gas turbine units, industrial steam turbines, turbine compressors, centrifugal pumps, etc. Wait. In these high-speed machines, the vibration and stability of the rotor system are of great importance. This is because, as the rotating machine is increased in speed and size, a flexible rotor is widely used in construction. Some rotors are super-first-order critical speeds, and some are super-second-order critical speeds. Vibration and Stability Issues in Rotor Systems Key Technical Keys to Ensuring Machine Reliability and Lifespan