| Issue |
MATEC Web Conf.
Volume 77, 2016
2016 3rd International Conference on Mechanics and Mechatronics Research (ICMMR 2016)
|
|
|---|---|---|
| Article Number | 08002 | |
| Number of page(s) | 5 | |
| Section | Materials Analysis and Study | |
| DOI | https://doi.org/10.1051/matecconf/20167708002 | |
| Published online | 03 October 2016 | |
Absorption characteristics of multi-layered material anechoic coating on frustum-of-a-cone cavities
1 College of Power Engineering, Naval Univ. Of Engineering, Wuhan 430033 China
2 National Key Laboratory on Ship Vibration & Noise, Wuhan 430033 China
Improve the low-frequency acoustic performance of sound absorption coating of submarine is a hot issue. Based on the theory of sound wave normally impinging on the absorption layer of 2D,the 2D shaft mode of frustum-of-a-cone cavities is established by finite element COMSOL, which is test to analyze the absorption characteristics combined structural parameters. The calculation results indicate that under the condition of the same perforation rate ,the absorption performance of multi-layered material anechoic coating is better than that of single-layered material anechoic coating, especially to the performance of low-frequency; the absorption performance of frustum-of-a-cone cavities is better than that of cylindrical and ellipsoidal structures. With the perforation rate is increasing,the absorption performance of anechoic coating in low-frequency improve..Choosing the appropriate cavity structure is important. And the future acoustic optimization of the multi-layered frustum-of-a-cone cavities anechoic coating is guided by the study.
© The Authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.