大型客机典型壁板传声损失特性的数值分析研究

以统计能量法为数值分析手段,对大型客机典型壁板结构的传声特性进行深入分析与研究.首先从传声损失与统计能量法基本理论出发,推导了由发声室-隔声结构-接收室三者组成的分析模型的结构传声损失表达式.以此作为理论着眼点,从飞机有限元模型中提取前客舱段的壁板结构,通过模型清理与声学简化,建立起飞机壁板结构传声损失的统计能量预计模...

The Research on the Numerical Analysis for the Transmission Loss of the Fuselage Typical Panel

The paper researched on the transmission loss of the fuselage typical panel based on the statistical energy analysis （SEA） method.. According to the theory of SEA, the paper got the formula about the transmission loss of the acoustic system consist of the sound source, the transfer and the receiving cavity. Through making clear the model, we set up the prediction SEA model of the fuselage panel and acquired the transmission loss curve. It was proved that the numerical model is efficient after comparing with the test data. So that we applied the method into development and design the transmission loss performance about the real fuselage panel including the skin, insulation blanket and interior panel.