浮筏隔振效果评定的矢量四端网络参数方法与试验研究

将矢量四端网络参数计算方法引入到浮筏隔振系统隔振效果评定中。把浮筏隔振系统分解成若干子结构,在每个子结构内建立输入输出的矢量四端网络参数矩阵,利用试验测试导纳数据,计算得到了浮筏系统各个层面的振动响应特征参量,采用功率流振级落差评定了浮筏隔振装置的隔振性能。计算结果与试验结果对比表明:所采用的计算方法合理,可以准确预报浮筏隔振系统的振动能量传递,为实际浮筏隔振效果评定提供了一种工程计算方法。

Evaluation and experimental research on floating raft isolation system by vectorial four pole parameter model

The calculation of the floating raft isolation level using the vectorial four pole parameter model is presented.The floating raft isolation system is divided into some substructures with multi-input and multi-output interfaces. Based on these vectorial four pole parameter matrices for each substructure, the force vectors and velocity response vectors as well as the power flows among substructures are predicted in this complex coupled system.The vibration isolation of floating raft system can be estimated by...