隔振装置中振动功率流的测量研究

Measurement of Vibration Power Flow Through Isolation System

以舰舶柴油机双层隔振装置为对象，研究了隔振装置中的振动功率流，用不同的振动功率流测量方法测量了通过隔振器传到上、下层质量和流入弹性基础中的振动功率流．不同的测量方法得到了类似的测量结果．可以利用隔振器上、下端的加速度互谱密度和隔振器的传递视在质量测量通过每个隔振器传递的振动功率流；也可以通过各接触点的有效导纳和加速度测量通过各接触点传递的振动功率流．

Based on the vibration isolation system,vibration power flow in the isolation system is investigated.Different measuring methods were used to measure the power flow through the upper and lower mass of the system and the base structure.Similar measuring results are obtained by different measuring methods used in the experiments.The cross spectral density of the upper and lower part's acceleration response could be used to measure the power flow into every isolator.The effective mobility and acceleration pickup could be used to measure the power flow.