摘要
本文开展了复杂激励下锥-柱-球组合壳结构声辐射特性分析研究.采用传递矩阵法结合复数矢径波叠加法计算水下锥-柱-球组合壳结构的辐射声压,通过有限元方法验证本文方法的准确性,最后计算分析水下锥-柱-球组合壳结构在不同激励位置、方向和形式下的声辐射特性.结果表明:径向点激励作用于柱壳中部时辐射声压最大,声压总级为138.26 dB;轴向点激励下作用于球壳中部时,辐射声压峰值数量较少,峰值主要位于高频段;周向均布线激励作用于柱壳中部时,激励越分散,辐射声压越低.
The acoustic radiation characteristics of cone-column-sphere composite shell structure under complex excitation were analyzed and studied.The transfer matrix method combined with complex vector-radial wave superposition method was used to calculate the radiation sound pressure of underwater cone-column-sphere composite shell structure,and the accuracy of this method was verified by finite element method.Finally,the acoustic radiation characteristics of underwater cone-column-sphere composite shell structure under different excitation positions,directions and forms were calculated and analyzed.The results show that the radiation sound pressure is the largest when the radial point excitation acts on the middle of the cylindrical shell,and the total sound pressure level is 138.26 dB.When it is used in the middle of spherical shell under axial point excitation,the number of radiation sound pressure peaks is small,and the peaks are mainly located in high frequency band.When the circumferential uniform wiring excitation acts on the middle of the cylindrical shell,the more dispersed the excitation is,the lower the radiation sound pressure is.
作者
柯昱照
张冠军
李贺帆
KE Yuzhao;ZHANG Guanjun;LI Hefan(School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China)
出处
《武汉理工大学学报(交通科学与工程版)》
2025年第6期1292-1298,1305,共8页
Journal of Wuhan University of Technology(Transportation Science & Engineering)
基金
船舶振动噪声重点实验室基金(6142204210208)
国家自然科学基金(52241102、51909201)。
关键词
声学
传递矩阵
波叠加法
复杂激励
声辐射特性
acoustics
transfer matrix
wave superposition method
multiple excitations
acoustic radiation characteristics
