文章摘要
唐广鑫,白国锋,刘克.水下含气泡橡胶材料的隔声性能的仿真[J].声学技术,2008,(5):680~683
水下含气泡橡胶材料的隔声性能的仿真
Simulation of sound insulation capability of underwater elastomers containing cavities
投稿时间:2008-01-10  修订日期:2008-03-20
DOI:
中文关键词: 水声  隔声  含气泡橡胶  动态有效模量
英文关键词: underwater acoustics  sound insulation  elastomer containing cavities  dynamic equivalent properties
基金项目:
作者单位E-mail
唐广鑫 中科院声学研究所, 北京, 100080  
白国锋 中科院声学研究所, 北京, 100080  
刘克 中科院声学研究所, 北京, 100080 kevine@mail.ioa.ac.cn 
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中文摘要:
      针对水下含气泡橡胶材料的隔声性能进行了研究。利用以往文献中Kelvin-Voigt粘弹性模型,得到材料动态等效体积模量、等效剪切模量及等效纵波声速随频率变化的关系,通过传递矩阵法数值计算、分析了不同孔隙率、孔径的情况下,材料的隔声性能、等效声速的变化。仿真结果表明,气泡的孔径、孔隙率的变化对复合材料的隔声性能都有显著的影响。该结果对水下隔声材料的设计有一定的参考意义。
英文摘要:
      A study of sound insulation capability of underwater elastomers containing cavities has been made.By using the Kelvin-Voigt viscoelastic model,the dynamic equivalent bulk modulus,the effective shear modulus and the equivalent dilatational wave speed of the material are deduced.The insulation ability of the equivalent material and the equivalent sound speed has also been calculated by transfer matrix theory under different porosity and cavity radius.The results of simulation show that cavity radius and porosity affect the sound insulation capability of composites,and the conclusion is useful for the design of sound insulation materials.
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