A new type of sound barriers based on a double-slit resonant ring structure is designed.The finite element method is used to analyze and calculate the sound insulation curve of the model of the new barrier.The calculation results show that the structure has two sound insulation peaks.Analysis of the sound pressure,sound pressure level,and sound ve-locity diagram at the peaks reveals the essential characteristics of this phenomenon.It is found that the property of the pro-posed structure comes from the joint action of the Helmholtz resonator and the Fabry-Perot resonator tube,and it is verified by comparison through experiments.At the same time,the finite element method is used to simulate and study the influence of structural parameters on the peak value of sound insulation.The results show that the peak value of sound insulation can be adjusted by changing the structural parameters such as the angle between the two opening rings and the width of the open-ing.The sound barrier based on this structure has good ventilation and noise reduction performance in the middle and low frequency bands.This work provides an effective method for the study of urban traffic noise and has potential application value.
关键词
声学/双开口谐振环/通风隔声/有限元/隔声量/声屏障
Key words
acoustics/double opening resonant ring/ventilation and sound insulation/finite element/sound insulation/sound barrier
维普
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