复合材料层合圆柱壳传声损失仿真分析  

Sound Transmission Loss of Laminated Composite Cylindrical Shell Using Simulation Analysis

作　　者：赵俊雅 晏石林[1] 闫文杰 李彬[1] ZHAO Jun-ya;YAN Shi-lin;YAN Wen-jie;LI Bin(Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics,Wuhan University of Technology,Wuhan Hubei 430070,China)

机构地区：[1]武汉理工大学新材料力学理论与应用湖北省重点实验室

出　　处：《计算机仿真》2019年第9期282-287,共6页Computer Simulation

基　　金：中央高校基本科研业务费专项资金资助(2018Ⅲ038GX)

摘　　要：针对复合材料层合圆柱壳的降噪问题,采用实验测试和数值模拟相结合的方法探究复合材料圆柱壳中低频的降噪特性。基于Virtual.Lab Acoustic软件,对壳体传声损失进行数值计算,通过与实验测试数据的对比,验证了有限元模型的可靠性。数值模拟150Hz-1000Hz范围内复合材料圆柱壳铺层角度、厚度及材料参数等因素对壳体传声损失的影响规律。结果表明:铺层角度的变化对壳体传声损失影响较大;圆柱壳厚度的增加能有效提高壳体的传声损失;E1和E2的增加提高了壳体的传声损失,但在150Hz-470Hz频段对传声损失影响不大。对结果分析可得:对复合材料铺层角度和材料参数的合理设计对提高结构的传声损失具有较大的意义。In order to reduce the noise of laminated composite cylindrical shell,the low-medium frequency noise reduction characteristics of laminated composite cylindrical shell are studied by means of experimental study and numerical simulation.Based on Virtual.Lab Acoustic software,the sound transmission loss of the shell was calculated numerically,and the reliability of the finite element model was verified by comparing with the experimental data.Numerical simulation was used to investigate the influence of layer angle,shell thickness and material parameters on the sound transmission loss of the composite cylindrical shell in the range of 150Hz-1000Hz.The results show that the change of the ply angle has a great effect on sound transmission loss.With the thickness of the shell increasing,the noise reduction is improved effectively.The increase of E1 and E2 improves the sound transmission loss,but has little effect on it in the 150Hz-470Hz band.The analysis results show that,the reasonable design of ply angle and material parameters is of great significance for improving the sound transmission loss of structures.

关 键 词：复合材料层合圆柱壳 传声损失 声学 仿真 

分 类 号：TB535[理学—物理]