静水压下声学覆盖层声阻抗研究  

Calculation of acoustic coating’s Impedance under hydrostatic pressure

作　　者：邹明松[1] 吴文伟[1] 余晓丽[1] 廖彬彬[1] 

机构地区：[1]中国船舶科学研究中心,江苏无锡214082

出　　处：《舰船科学技术》2013年第3期57-60,68,共5页Ship Science and Technology

摘　　要：采用有限元方法计算静水压作用下声学覆盖层空腔的受压变形,采用多层均匀分布厚壁圆柱筒体的薄层来模拟声学覆盖层内复杂的空腔,用传递函数法推导多层介质的声传播矩阵列式。进一步结合实验所得不同静水压下声学覆盖层的材料特性参数,建立静水压作用下声学覆盖层声阻抗的求解方法。通过与某型声学覆盖层试验结果的比对分析,验证了本文所述计算方法的正确性。在此基础上,分析了静水压对声学覆盖层声阻抗的影响。The finite element method is adapted to caculate the deformation of acoustic coating under hydrostatic pressure in this paper. The complicated cavity inside the acoustic coating is modeled by uniformly distributing thin cylindrical layer and the acoustic propagation matrix is deduced by using transfer function method. Combining tested material characteristic parameters of acoustic coating under different hydrostatic pressures, the computing method of the acoustic impedance of acoustic coating is finally constructed. The computing method is verified by the experimental results of certain acoustic coating. Based on the computing method, the influence of hydrostatic pressure on acoustic impedance is analyzed.

关 键 词：声学覆盖层 静水压 声阻抗 

分 类 号：TB53[理学—物理]