文章摘要
张德志,周利生,翁志学,单国荣.圆柱形通道结构橡胶声障板[J].,2004,23(2):45-48,44
圆柱形通道结构橡胶声障板
Acoustic performance of rubber baffle with cylindrical duct
  
中文摘要:
      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。
英文摘要:
      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.
DOI:10.11684/j.issn.1000-310X.2004.02.011
中文关键词: 圆柱通道  橡胶  动态剪切模量  损耗因子  反声性能
英文关键词: Cylindrical duct  Rubber  Loss factor  Dynamic shear modulus  Reflection baffle
基金项目:
作者单位
张德志 第七一五研究所
富阳311400 
周利生 第七一五研究所
富阳311400 
翁志学 浙江大学 杭州310027 
单国荣 浙江大学 杭州310027 
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