船舶轴系横向振动共振转速的实验

Experimental Investigation of Resonance Speed for Ship Propeller Shafting in Lateral Vibration

本文论述了在试验台上进行的不同叶片数螺旋桨轴系横向受迫振动实验。试验结果的分析表明，只要转速的整数倍等于一阶一次横向振动临界转速时就会产生振幅较大的共振。传统方法在进行船舶轴系横向振动计算时，只把一阶一次与叶片次临界转速作为共振转速是不够全面的。

The forced transverse vibration tests of a ship propeller shafting with a variety of propeller blades were carried out on a test bed. The test results show that large amplitude resonance will occur, if the rotating speed of the propeller shaft is equal to the integer multiples of the first order critical rotating speed in the lateral vibration of propeller shafting. The traditional practice in the calculation of lateral vibration for ship propeller shafting, which considered only the first order critical speed of shafting and the subcritical speed of propeller blades, is to the Author's opinion, not sufficient in describing the complete phenomena.