大型客机舱内声学设计方案综述（二）

数值模拟声学计算已广泛用于飞机舱内噪声的预计、声学结构的优化以及部件声学特性的评估，特别是在民机设计阶段。从数值模拟声学计算方面出发，介绍了有限元、边界元与统计能量分析这三大噪声工程分析方法，论述了试验测量与仿真计算结果的相互关系，结合民用飞机设计特点，对民用飞机的舱内声学设计方案加以阐述。

Overview of the Cabin Acoustic Design for theLarge Commercial Aircraft(II)

Recently the numerical analysis method of acoustic performance have been applied popularly in the aircraft cabin noise prediction, the acoustic optimization of aircraft fuselage structure and the acoustic performance valuation of the component on aircraft, especially in the process of aircraft design. Therefore, based on the method of the acoustic numerical analysis, the paper introduced the main method of acoustic analysis including FEM, BEM and SEA, and compared the prediction results and the measurement, and provided the basic process of the aircraft cabin acoustic design. Combined with the typical character of the aircraft design, we overviewed and researched on the program of aircraft cabin acoustic design.