中国舰船研究2017，Vol.12Issue(4)：49-54,6.DOI:10.3969/j.issn.1673-3185.2017.04.008
基于几何声学的船舶舱室声学设计方法
Acoustic design method of ship's cabin based on geometrical acoustics
冯爱景 1魏强 2张大海3
作者信息
- 1. 上海船用柴油机研究所,上海 201108
- 2. 中国舰船研究设计中心,湖北武汉 430064
- 3. 中国舰船研究设计中心船舶振动噪声重点实验室,湖北武汉 430064
- 折叠
摘要
Abstract
In light of the question of how to select the best noise control position and measures in the large noise transmission path of the cabins of a ship, based on the acoustic ray-tracing method in the theory of geometrical acoustics, and by considering the effect of the sound transmission of the bulkhead, this paper proposes the sound line search method. It is used to calculate the sound pressure of a ship's cabin, allowing the sound field distribution of multiple compartments to be simulated. The paper proposes a sound ray-searching method in which the acoustic sensitivity of different positions of the bulkhead to the noise of the target cabin is calculated by searching for the sound ray passing the target cabin. According to this, a cabin noise reduction plan can be designed to optimize medium and high frequency cabin noise. With this method, the noise of a typical cabin can be optimized and reduced by 7.3 dB. Through comparative analysis with the statistical energy method, it is proven that the method is feasible and can guide the refined design of noise reduction in ships' cabins.关键词
舱室降噪/几何声学/声线跟踪法/声线搜索法/优化设计Key words
noise reduction of ship's cabin/geometrical acoustics/ray-tracing method/ray-searching method/optimal design分类
交通工程引用本文复制引用
冯爱景,魏强,张大海..基于几何声学的船舶舱室声学设计方法[J].中国舰船研究,2017,12(4):49-54,6.
