舱筏隔振系统水下振动特性的理论分析与试验研究

为充分利用潜艇动力舱空间和提高其隐蔽性能，对潜艇泵组等辅机设备采用了框架式浮筏隔振设计。以带泵组浮筏隔振装置的潜艇舱段为研究对象，采用有限元流固耦合理论，以总振级为目标，研究浮筏隔振系统的参数变化对舱段振动特性的影响规律。通过舱段缩比模型水下试验验证了理论计算方法的可靠性和框架式浮筏系统的隔振效果。提出的分析方法和结论对于其它动力设备的浮筏设计也具有参考价值。

Theoretical and Experimental Research on the Vibration of Cabin with Floating Raft Isolation System

According to the requirements of silence and concealment, a frame-type floating raft isolation system was designed to reduce the vibration and noise of power machine in a submarine. For a miniature cabin model, the relation between vibration transmission and the parameters of the floating raft isolation system was analysed with finite element method, and the overall acceleration level was used to assess the isolation effect. Through the experiment on the miniature model of the submarine, the theoretical validity and the isolation effect were proved, and the vibration behavior was then obtained from the experimental results. The method and results can be valuable in designing other power machine isolation systems in submarine.