We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
A Novel Ventilated Metamaterial Barrier (VMB) for Traffic Noise Reduction.
- Authors
Fan, Weikang; Cheng, Zhibao; Xu, Shuai; Dou, Yuwei
- Abstract
Purpose: To mitigate the urban traffic noise within the frequency range of 100–400 Hz, this paper proposes a novel ventilated metamaterial barrier (VMB). Methods: With the help of the finite-element method, the sound mitigation property of the proposed VMB is simulated. Using the Monte Carlo method, the proposed VMB is designed. The ventilation efficiency of the proposed VMB is evaluated in terms of flow resistivity. Furthermore, a parametric analysis is conducted to investigate the influences of the geometric size of the unit cell, acoustic incident angle, layer spacing, and layer number on the noise mitigation performance. Results and Conclusions: Numerical results confirm that the VMB has a significant noise reduction effect in the low-frequency sound range. After passing through the VMB, the peak normal incidence sound absorption coefficient displays a reduction of 92.5%. Overall, the VMB solves the conflict between acoustic performance and ventilation efficiency of traditional road sound barriers, which has lots of potential applications in traffic engineering.
- Subjects
TRAFFIC noise; METAMATERIALS; TRAFFIC engineering; ABSORPTION of sound; MONTE Carlo method; UNIT cell; NOISE control
- Publication
Journal of Vibration Engineering & Technologies, 2024, Vol 12, Issue 3, p4495
- ISSN
2523-3920
- Publication type
Article
- DOI
10.1007/s42417-023-01133-x