双层隔振系统结构参数改变对结构振动的影响

Effect of Parameters of Double Isolation System on Its Structural Vibration

本文应用有限元法研究了流 -固耦合条件下船舶隔振系统结构振动问题的计算方法 ,在考虑流 -固耦合状态下 ,详细研究了双层隔振系统主要结构参数改变对系统结构振动响应的影响 ,如上下层隔振器刚度、中间体与被隔设备的质量比以及基座弹性模量等 ,同时进行了计算和试验结果对比分析。

In this paper, according to a vibration theory FEM is ap plied to compute structural vibration of a ship in consideration of fluid-structure interaction. By means of this method, the effects of changing design parameters of a double isolation system on its structural vibration are discussed, such a s stiffness of the two-stage elastic mounts, mass ratio of the medium raft and the elastic modulus of the foundatio n. Some experiments are carried out and compared with computation.