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本文叙述了用有限元法计算梁的挠度,并由挠度和力按瑞雷能量法计算水轮机主轴第一阶临界转速。叙述了基本理论和方法,对计算机程序及其使用作了说明。
This article describes the finite element method to calculate the deflection of the beam, and by the deflection and force by Rayleigh energy method to calculate the first critical speed of the turbine shaft. Describes the basic theory and methods, described the computer program and its use.