三角形声屏障的声学特性仿真分析

Simulation Analysis of Acoustic Characteristics of Triangular Sound Barrier

利用COMSOL软件建立并验证了声屏障隔声降噪的仿真分析模型。以表面带有三角形扩散体的声屏障作为研究对象,分别研究了声屏障不同结构参数(声扩散体的宽度、间隔和角度)对于插入损失的影响。研究结果表明:对于带三角形凸起的声屏障而言,扩散体的角度对于插入损失的影响较大,宽度和间隔等参数影响不明显,为以后声屏障结构的设计研究提供了一定的参考意义。

The simulation analysis model of sound barrier noise reduction is established and verified by COMSOL software.The acoustic barrier with a triangular diffuser on the surface was used as the research object.The effects of different structural parameters of the sound barrier(width,spacing and angle of the sound diffuser)on the insertion loss were studied.The results show that for the sound barrier with triangular protrusions,the angle of the diffuser has a great influence on the insertion loss,and the influence of parameters such as width and spacing is not obvious,which provides a certain reference for the design of the sound barrier structure.