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Experiment and analysis on sound absorption characteristics of metal rubber
Ma Yanhong, Li Haoyu, Li Yifeng, Hong Jie*
School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� According to the established sound absorption model of metal rubber(MR), the measurement and research for the coefficient and acoustic impedance of MR, which is of different parameters, were carried. The influencing laws of MR-s structural parameters (such as wire diameter, thickness, porosity, cavity size and so on) on its sound absorption characteristics were investigated. With the comparative analysis between the experimental results and the calculated ones from the theoretical model, the acoustic model was proved accurate. It not only provides experiment method for the further engineering application of MR in the field of noise reduction, but also set up a basis for the theory improvement.
Keywords�� metal rubber   experimental research   noise reduction     
Received 2008-11-28;
Fund:

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About author: ���޺�(1975-),Ů,����������,��ʦ,mayanh2002@163.com.
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���޺�, �����, ��һ��, �� ��.�����𽺲��������������������[J]  �������պ����ѧѧ��, 2009,V35(5): 604-607
Ma Yanhong, Li Haoyu, Li Yifeng, Hong Jie.Experiment and analysis on sound absorption characteristics of metal rubber[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2009,V35(5): 604-607
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2009/V35/I5/604
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