摘要
本文介绍了具有圆柱通道的橡胶水声反声障板的机理,通过静态近似得到此种橡胶声学参数的计算公式,测试了相关材料的动态力学性能,并对障板的声学特性进行了理论计算和分析,给出了不同频率下的反声性能随材料损耗因子、剪切模量及厚度的变化规律,并对模型进行了试验验证。
In this paper, rubber in the form of cylindrical duct is used as underwater acoustic reflection baffle, its mechanism is described. The formula for calculating the main acoustic performances of baffle are derived by static approximation. The elementary material of baffle are tested, indicating the dynamic mechanical performances. For an immersed baffle model, theoretical calculation and analysis have been carried out at different frequencies, giving baffle performance variation with loss factor, shear modulus as well as thickness of this kind of material.
出处
《应用声学》
CSCD
北大核心
2004年第2期45-48,44,共5页
Journal of Applied Acoustics
