摘要
为探讨不同顶部声屏障对目标环境的降噪效果,采用实地测量确定插入损失为10 dB(A)。设计了Y型全反射声屏障,利用Virtual.Lab Acoustic的非耦合声学直接边界元法进行仿真分析。结果表明,当交通噪声等效频率为400 Hz时,Y型声屏障测点位置的噪声值为67.3 dB(A),其插入损失为12.56 dB(A),符合预期降噪要求。
To study noise reduction effect of different top sound barriers on the target environment,insertion loss is selected as 10 dB(A)by field measurement.A Y-type total reflection sound barrier is designed and simulated in Virtual lab Acoustic with non-coupled acoustic direct boundary element method.The results indicate that the noise value at Y-shaped sound barrier measuring point is 67.3 dB(A)when the equivalent traffic noise frequency is 400 Hz,and its insertion loss is 12.56 dB(A),which meets the needs of expected noise reduction.
作者
蔡伟明
CAI Weiming(Intelligent Manufacturing Department,Zhangzhou Institute of Technology,Zhangzhou 363000,China)
出处
《长春工业大学学报》
CAS
2022年第2期169-172,共4页
Journal of Changchun University of Technology
基金
福建省中青年教师教育科研项目(JAT201261)。
关键词
降噪
声屏障
仿真分析
noise reduction
sound barrier
simulation analysis
