北京交通大学学报2017，Vol.41Issue(4)：17-22,6.DOI:10.11860/j.issn.1673-0291.2017.04.003
公路隧道内主动降噪声源布置位置仿真模拟
Analogue simulation of the active noise control source location in highway tunnel
摘要
Abstract
The active noise reduction feature of highway tunnel is analyzed theoretically based on the principle of acoustic interference.The models of three full-sized tunnels are established based on finite element method (FEM).The distributions of sound pressure level are calculated,and the characteristics of sound field in tunnels are analyzed during active noise cancellation.The results show that the lower the noise frequency is,the better the effect of active noise control is when adding the spatial distance between the active noise control device and the noise source to the spatial distance between the active noise control device and the noise reduction position,getting a sum,then comparing the sum and the spatial distance between the noise source and the noise reduction position,there is a conclusion that if the difference value is the integral multiples of noise wavelength,noise reduction of more than 3dB can be achieved nearby the noise reduction area.关键词
公路隧道/主动降噪/有限元法/声压级/最优位置Key words
highway tunnel/active noise control/FEM/sound pressure level/optimal location分类
交通工程引用本文复制引用
魏庆朝,张雪峰,臧传臻,倪永军,胡秉谊..公路隧道内主动降噪声源布置位置仿真模拟[J].北京交通大学学报,2017,41(4):17-22,6.基金项目
交通运输部交通运输建设科技项目(20113183151400) （20113183151400）
呼和浩特市科技计划项目(2013150103000085)Construction Science and Technology Project of Ministry of Transport(20113183151400),Science and Technology Project of Hohhot City(2013150103000085) （2013150103000085）
