计算均质等截面柱体微幅摆动固有频率的一般方法

Generalized Method of Solution to Inherent Frequencyof Column that Have the Same Section and Qualityof Even Distribution Oscillating in Miniamplitude

本文应用曲率圆弧近似一般曲线的方法，导出了具复杂截面曲线的等截面柱体在另一柱体上微幅摆动时固有频率的一般计算式。该式简单实用，既可用于判定平衡点是否稳定，也能方便地计算出微摆固频。

This paper used a method of curvature circle replacing general curve,the authors obtain twouniversal formulas calculating the inherent frequency of relative oscillation in miniamplitude be-tween columns that have general section curve.The formulas are simple,By means of the formu-las,not only judging whether or not two columns have stable relative oscillation but also calculateinherent frequency of socillation in miniamplitude is simple.