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机械阻抗测量的一种新方法
引用本文:明瑞森.机械阻抗测量的一种新方法[J].应用声学,1997,16(1):13-17,12.
作者姓名:明瑞森
作者单位:浙江大学建筑系!杭州,310027
摘    要:本文介绍了一种新的机械阻抗测量方法-声强法,由定义出发将机械阻抗表为功率流和加速度响应谱的函数,应用结构声强技术测量功率流,声强法不需要测量作用力信号,可以用于测量任意结构中的各类机械阻抗,实验结果表明,声强获得的测量值与直接获得的测量值相近,声强法能较准确地测量一维和二维匀质结构中机械阻抗。

关 键 词:机械阻抗  声强法  声学  测量

A new method for measuring mechanical impedance
Ming Ruisen.A new method for measuring mechanical impedance[J].Applied Acoustics,1997,16(1):13-17,12.
Authors:Ming Ruisen
Institution:Department of Architectur, Zhejiang University, Hangzhou 310027
Abstract:A new method for measuring mechanical impedance is described in this paper.Based on its definition, mechanical impedance is expressed as a function of power flow and acceleration auto-spectrum. The power flow can be measured using structural intensity techniques. All types of mechanical impedance in any structure can be measured using this new method in which force signals don' t need to be measured. A series of measurements was carried out and the results were agreed well with those measured by the direct method.
Keywords:Mechanical impedance  Structural intensity technique  Power flow  
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