轴裂纹识别的频率法

The Indentification of Shaft-Crack by the Frequency Method

利用有限元方法得出含裂纹光轴固有频率变化率的统计规律曲线,通过等高线截取识别出裂纹位置 比及深度比,并由试验验证该方法的有效性。

A regular statistical curve for the variation rate of natural frequency in a crack-containing cylindrical shaft is obtained by employing the finite element method. By contour sectioning, the position and depth of the crack can be identified. The validity of the method is proven through test.