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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。
Numerical simulation Acoustic calculations have been widely used in the prediction of aircraft cabin noise, optimization of acoustic structures, and evaluation of the acoustic characteristics of components, especially in the civil aircraft design phase. Based on numerical simulation of acoustical calculation, the three noise engineering analysis methods of finite element, boundary element and statistical energy analysis are introduced. The relationship between experimental measurement and simulation results is discussed. Combined with the design features of civil aircraft, Internal acoustic design program to be elaborated.