Study of unconstrained layer damping treatments applied to rectangular plates having central cutouts

Theoretical and experimental investigations are made to study the damping effectiveness of partially applied unconstrained layer damping treatments on rectangular plates having central rectangular cutouts. The effect of such partial applications on the modal frequencies, loss factors, and mode shape...

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Veröffentlicht in:Computers & structures 1986, Vol.23 (3), p.433-443
Hauptverfasser: Parthasarthy, G., Ganesan, N., Reddy, C.V.R.
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creator Parthasarthy, G.
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Reddy, C.V.R.
description Theoretical and experimental investigations are made to study the damping effectiveness of partially applied unconstrained layer damping treatments on rectangular plates having central rectangular cutouts. The effect of such partial applications on the modal frequencies, loss factors, and mode shapes are estimated analytically by the finite element method. Different partially applied damping configurations have been studied with a view to realize maximum system damping for the minimum mass of the applied damping. The theoretical results are validated by suitable experiments. Specific recommendations are made for the near optimum distribution of the damping material on the panel surface which is effective for many modes of the panel response.
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subjects Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Physics
Solid mechanics
Structural and continuum mechanics
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
title Study of unconstrained layer damping treatments applied to rectangular plates having central cutouts
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