基于统计能量分析进行声学优化设计的技术研究

阐述了用统计能量分析方法进行声、振环境预计的研究机理,为利用统计能量分析方法进行飞机舱内声学优化设计提供了探索的思路;论述了统计能量分析方法在民机舱内噪声分析上的应用优势和局限性。以某型号飞机客舱段为实例,建立了统计能量声学模型及加载,通过选择不同的飞机客舱壁板材料,进行客舱环境的声压级预计并分析预计结果,从而确定舱内声学设计优化方案。

Acoustic Optimization about Aircraft Cabin Noise Based on Statistical Energy Analysis Method

This paper demonstrated the principle of statistical energy analysis (SEA) method of predicting the noise and vibration. It provides one of the important ways of aircraft cabin noise prediction. The advantage and limitation of SEA is also mentioned. To predict the sound field and noise level in the cabin of aircraft,an acoustic model of certain type plane based on SEA theory is also established in this paper,it predicts the sound level with different material of the cabin's sidewall of the plane. And the ac...