汽轮发电机组轴系扭转振动的计算

本文以大型汽轮发电机组轴系为基础,利用传递矩阵解析地求解其扭转振动的固有频率和主振型,并根据主振型的正交条件进行坐标变换同时解耦。最后在主坐标下求解轴系在任意扭矩作用下的动力响应。算例和工程实际问题的计算结果与解析解完全一致。

The Calculation of Torsional Vibration of Turbogenerator Shafts

Based on the large turbogenerator shafts, the natural frequencies and principal functions of their torsional vibrations are solved analytically by transfer matrix. According to the orthogonality of principal functions, coordinate changing and uncoupling are completed simultaneously. Finally, the responses of shafts to arbitrary torque are calculated in principal coordinates. Results of example and engineering problem are very agreeable to the analytical solutions