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INFLUENCE OF DIFFERENT STIFFENING TYPES OF THE AIRCRAFT BODY STUCTURE ON THE NOISE EXPOSURE IN THE CABIN

机译:不同加强类型的飞机体结构对机舱噪声暴露的影响

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The current paper deals with the influence of stiffeners on the sound transmission through aircraft structures. Several studies have shown that the vibrations of the stiffeners form a sound transmission path in a way that the movements of the stringers excite the "aircraft skin fields", which leads to additional "noise sources ". Besides the investigation of this effect, the objective of the present contribution is the investigation of different modeling variants, the radiation of sound energy of vibrating stringers, and the influence of the stiffening on the skin field with respect to sound transmission. Within the investigations, a coupled Boundary Element/Finite Element Method has been used.
机译:目前的论文涉及加强筋对通过飞机结构声音传输的影响。几项研究表明,加强筋的振动形成了声音传输路径,使得桁条的运动激发“飞机皮肤场”,这导致额外的“噪声源”。除了对这种效果的调查外,目前贡献的目的是对不同建模变体的研究,振动桁条的声能辐射,以及相对于声音传输的振荡对皮肤领域的影响。在调查中,已经使用了耦合边界元件/有限元方法。

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