Sound radiation from a flow-excited rectangular plate with visco-elastic supports
Keywords:Acoustic noise, Boundary conditions, Equations of motion, Mathematical models, Plates (structural components), Turbulent flow, Vibrations (mechanical), Viscoelasticity, Mach number, Sound radiation, Statistical energy analysis, Surface pressure field
AbstractA model was developed to predict the vibration response of a rectangular plate mounted on viscoelastic supports. The plate was assumed to be excited by a distributed surface pressure field. The radiated sound was calculated from the transverse velocity of the plates. An assumption that all the vibration energy is constrained at the peak of mode shape wave number spectrum was used for the evaluation of the wave number spectrum. The damping factor, which is frequency dependent was calculated from the assumed mode method results.
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