Acoustic-Structure Interaction for a Floating Airport Subject to a Moving Load

Abstract

Very Large Floating Structures used as floating airports are constructed inside sheltered waters to minimize ocean effects on them. These sheltered areas have abundant marine life which in general is affected by noise pollution. Sound generated by takeoff/landing of an airplane from a floating airport is the area of interest in this study. Traditionally, noise problems have been solved in a "trial and error" manner with numerical analysis being relegated to a supporting role and their results greeted with skepticism. For structures such as floating airports, "trial and error" can be costly and hence numerical methods are used. We propose a simple numerical method for calculating the sound radiation from floating structures due to such moving loads. The effect of moving load, current in the fluid below and axial loading has been studied. In developing the expression, Fourier transform methodology for a Timoshenko-Mindlin plate is utilized.