浮筏隔振系统功率流特性分析

针对工程实际中浮筏隔振装置，建立了柔性基础上机组多支承弹性浮筏耦合隔振系统动力学普遍模型，提出了子系统动态特性综合分析法，给出了耦合系统动态传递方程及功率流表达式。根据工程中两机组浮筏隔振系统功率流理论计算结果，着重探讨安装频率与支承结构柔性耦合作用及其对隔振效果影响。研究结果表明：合理设计安装频率，可有效控制振动能量传输。

Power Flow Analysis of Floating Raft Isolation System

A generalized theoretical model for vibrating machines supported on non-rigid foundation by multiple anti-vibration mounts and a flexible floating raft is proposed. The corresponding structural analysis method is developed, and the dynamic transmission equations are derived to predict the power flow characteristics in subsystems. Numerical calculations of power flow for practical floating raft isolation system are carried out to explore the effects of mounting frequency on the flexibility of supporting structure and the transmitted power. It is shown that designing the mount frequency lower than the first mode of supporting structure can effectively reduce the vibration power transmitted into the foundation.