Eigenpairs of a coupled rectangular cavity and its fundamental properties
Coordinate system of a rectangular cavity with a flexible panel on top.
Frequency response of (a) acoustic potential energy inside the coupled cavity and (b) the kinetic energy of the panel.
(Color online) Normalized velocity mode shape of a flexible panel at the 1st∼4th mode.
Normalized mode shape of sound pressure in the z direction at the 1st∼the 4th mode.
(Color online) Orthogonality condition indices of the 1st through 7th eigenfunction, (a) presented orthogonality condition, (b) conventional orthogonality condition.
(Color online) Distribution of surface velocity and particle velocity at z = Lz at the resonant frequency, (a) 1st conventional standing wave mode, (b) 2nd evanescent mode.
(Color online) View of a rectangular cavity.
Frequency response of the panel and the sound pressure (Experiment), (a) velocity of the panel, (b) sound pressure.
(Color online) Normalized surface velocity of a panel at the 1st∼4th (Experiment).
Normalized mode shape of sound pressure in the z direction at the 1st∼4th mode (Experiment).
Normalized mode shape of sound pressure in the z direction at the 1st∼4th mode with damping effect by ζ = 0.03 (Numerical analysis).
Specification of a panel and a rectangular cavity used for numerical analysis.
Eigenpairs of the coupled rectangular cavity before and after coupling.
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