对用有限差分法计算两支点水轮发电机组临界转速的初步探讨

A Preliminary Discussion on Calculating the Critical Speed of Dual-support Hydrogenerating Set by Finite Difference Method

用有限差分法的一组代数式代替阶梯形转轴挠度曲线的微分方程式,来计算水轮发电机组的临界转速,比传统方法更切合实际,可节省材料,减轻电机的重量。

By using a group of algebraic equations of finite difference method as a sub- stitute for deflection curve differential equation of a stepped shaft to calculate the critical speed of hydrogenerating set,it is more practical than traditional method and can also achieve the material saving and reducing the weight of generator.