Physics – Classical Physics
Scientific paper
2009-03-10
Noise and Vibration : Emerging Methods, Oxford : Royaume-Uni (2009)
Physics
Classical Physics
Proceedings of Noise and Vibration: Emerging Methods - NOVEM 2009
Scientific paper
It was recently observed in a numerical study on a high order perturbation method under heavy fluid loading that a loaded vibrating plate results, not only in the classical frequency shift of the in vacuo single resonance (in both the real part because of the fluid added mass and the imaginary part because of energy lost by radiation), but also in an increase in the number of the resonance. As a result of the loading, a single in vacuo resonance of the structure is transformed into a multiple resonance. Here we show that this phenomenon is a refinement of the Sanchez's classical result where it was established, using asymptotic analysis, that in the case of a light loading conditions " the scattering frequencies of a fluid loaded elastic structure (ie the resonance frequencies) are nearly the real eigenfrequencies of the elastic body alone and the complex scattering frequencies of the fluid with a rigid solid ". A theoretical explanation of the multiple resonances is given using classical results on theory of entire functions. It is established that every single in vacuo resonance of a simply supported rectangular plate is transformed into an infinite number of resonances under fluid-loading condition.
No associations
LandOfFree
Spectrum of a fluid-loaded vibrating plate: the multiple resonance phenomenon does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spectrum of a fluid-loaded vibrating plate: the multiple resonance phenomenon, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectrum of a fluid-loaded vibrating plate: the multiple resonance phenomenon will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-186822