大型汽轮机的冷凝器管子的破坏振动一般由两种情况造成:1、共振;2、强迫振动。第一种情况往往造成冷凝器管子大面积的破坏。随着我国核电站的建立,掌握冷凝器管子振动的规律,对确保核电站的安全运行有着极其深刻的意义。以往计算冷凝器的管子振动,通过求解四阶振动微分方程来实现,但由于最后归结的频率方程都为高阶的,因此对高频常会出现失根和增根,而且振型也有失真现象。究其 Vibration of the condenser tube of a large steam turbine is usually caused by two conditions: 1, resonance 2, forced vibration. The first case often leads to large-scale destruction of the condenser tube. With the establishment of nuclear power plants in our country, mastering the law of condenser tube vibration has extremely profound meaning to ensure the safe operation of nuclear power plants. In the past, the tube vibration of the condenser was calculated by solving the fourth-order differential equation. However, since the final frequency equation was high-order, root-loss and root-mean-square were often found at high frequency, and the mode shape was also distorted. Study it