典型隔振系统振动特性的理论分析与试验研究

本文以船舶机舱设备中典型的电机和风机缩小模型为动力设备对象,从理论及实验两方面研究其振动传递特性。结果表明:用简化为弹簧和阻尼器的隔振器来模拟实际橡胶隔振器,隔振效果在高频段有一定差异,低频段影响不大;为了改进隔振效果,可以在筏体及基座粘贴阻尼层,并尽量减小隔振器刚度和合理选择隔振器阻尼。

Theoretical Analysis and Experimental Research on the Vibration Characteristics of Typical Vibration Isolation System

Taking the typical miniatures of motor and fan in ship engine room facilities as the power facility objects, this article studies their vibration transfer characteristics from aspects of theory and experiment. Results show that when using the simplified spring and damper vibration isolator to simulate the actual rubber vibration isolator, the vibration isolation effect has certain difference at high frequencies, little effect at low frequency. In order to improve the vibration isolation effect, a damping layer can be pasted in raft body and base, and the vibration isolator stiffness should be reduced and the vibration isolation damper should be selected reasonably.