摘要
针对多输入多输出的复杂浮筏隔振系统,建立了多方向耦合振动传递的矢量四端网络参数模型。给出了浮筏各个子结构的矢量四端网络参数矩阵,为浮筏隔振系统各个层面的振动传递和噪声预报提供了工程估算方法。通过具体算例,数值分析了浮筏各子系统结构参数变化对基座输入功率的影响。使用该方法可以方便地得到浮筏隔振系统各个层面的振动和噪声功率特征参量,并可推广到结构更加复杂的振动系统的计算分析。
Calculation method of power flow transmission through a floating raft system by vectorial four pole parameter model is presented in this paper. As often seen, the floating raft system consisting of several subsystems is reduced to a multiple-input and multiple-output （MIMO） linear system. The dimensions of input and output may be different. The vetorial four pole parameter matrix of each subsystem is deduced and developed to analyze the dynamical behaviour of the complex floating raft system. The vibration power flow is also predicted on each interface in this system. Numerical simulation results for a beam raft and a simply supported rectangular plate are presented. The characteristic parameters of sound and structural vibration can be obtained expediently by using this model. It can also be extended for more complex vibration systems.
出处
《中国造船》
EI
CSCD
北大核心
2010年第4期118-126,共9页
Shipbuilding of China
关键词
浮筏
隔振
矢量四端参数模型
floating raft system
vibration isolation
vectorial four pole parameter model
