Sound Insulation Performance of the Sandwich Panel Cored with Magneto-Rheological Fluid
Abstract: Mathematical model of the sound transmission loss (STL) of sandwich panels is firstly established based on the method of wave impedance analysis. And then, the viscoelastic moduli of magneto-rheological fluid are estimated indirectly according to the relaxation time spectrum. Finally, the simulation program of the STL of sandwich panels is coded by MATLAB and then the STL of sandwich panels is analyzed. Research results show that there are obvious effects of the field current on the STL, and semi-active control of the sound insulation performance of the sandwich panel can be realized by adjusting the field current; the core layer thickness of the sandwich panel is not the bigger the better because bigger thickness is easy to make the coincidence frequency fall into the common operating frequency range of sandwich panels and thus worsens the sound insulation performance of sandwich panel in low frequency range; selection of face sheet material should comprehensively consider the sound insulation performance of panels in both low and high frequency ranges, and the panel cost and lightweight requirements should also be considered.
文章引用: 戚利利 , 徐晓美 , 石 静 , 刘 凯 , 陆安琪 (2016) 磁流变液夹层板隔声性能研究。 交通技术， 5， 118-125. doi: 10.12677/OJTT.2016.55015
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