整流罩用降噪材料与结构及声场分析方法

为了有效改善整流罩内声振环境，最常见并且高效的方法是通过在整流罩的壁面铺覆降噪材料来降低噪声的声压级。本文总结了国内外整流罩降噪材料的工程应用及研究进展，详细介绍了几种主要降噪材料的基本性能和降噪原理，对不同频段下适用的声场分析方法及过程作了阐述，并提出了对我国在降噪材料领域研究发展的建议。

Sound Field Analysis Method for Noise Reduction in Fairing Materials and Structures

In order to improve the acoustic-vibration environment inside the fairing,the most common and efficient method is laying noise reduction materials on the inner wall of fairing to reduce the sound pressure level of noise.In this paper, the engineering application and research progress of fairing noise reduction materials and applicable frequency bands at home and abroad were summarized.Baseline properties and noise reduction principles of several main noise reduction materials were introduced in detail.On top of all, suggestions for the research and development of noise reduction materials in China were put forward.