| 一种用于阻尼夹层板传声损失（TL）计算的等效参数法 |
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| 作者单位： | 上海城建学院机电工程系，上海交通大学振动冲击噪声研究所 |
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| 摘 要： | 本文给出一种用于阻尼夹层板传声损失（ＴＬ）计算的简化方法──等效参数法，将该方法应用于对称及非对称阻尼夹层板的ＴＬ计算，并与按照复杂的Ｃｈｏｎａｎ＆Ｋｕｇｏ关于复合板的波传递理论经数值计算得出的ＴＬ值进行了比较．结果表明：对于在噪声控制工程中人们感兴趣的频率范围，这种简化方法能够给出较为满意的结果．
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| 关 键 词： | 夹层板 传声损失 计算方法 等效参数 |
The Equivalent Parameter Method for Sound Transmission Loss Calculation of Damped Sandwich Panel |
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| Authors: | Zheng Hui |
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| Abstract: | In this paper,a simplified method,Equivalent Parameter Method (EPM),for sound transmission loss (TL) calculation of damped sandwich panel with a viscoelastic core layer in-between two elastic face sheets has been proposed. The TL values of some symmetric and asymmetric damped sandwich panels with differ-ent configuration predicted by EPM are compared with those by more sophisticated Chonan-Kugo's wave transmission theory for composite plate. It is shown that this simplified method for TL calculation of damped sandwich panel can give fairly satisfactory results in the frequency of interest in noise control engi-neering. |
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| Keywords: | sandwich panel sound transmission loss calculation method equivalent parameter |
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