This paper presents a study on quantitative prediction and understanding of time-harmonic wave characteristics in damped plates. Material dissipation is modelled by using complex-valued velocities of free dilatation and shear waves in an unbounded volume. As a numerical example, solution of the classical Rayleigh–Lamb problem for a viscoelastic plate is presented to illustrate and discuss the role of dissipation in the cut-off phenomenon and in the phenomenon of veering for dispersion curves. These phenomena are explained in more detail considering a simple model, which allows accurate asymptotic analysis of the perturbation of dispersion curves in the regions of cut-off and veering.

On the effect of damping on dispersion curves in plates / Manconi, Elisabetta; S., Sorokin. - In: INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES. - ISSN 0020-7683. - 50:11-12(2013), pp. 1966-1973. [10.1016/j.ijsolstr.2013.02.016]

On the effect of damping on dispersion curves in plates

MANCONI, Elisabetta;
2013-01-01

Abstract

This paper presents a study on quantitative prediction and understanding of time-harmonic wave characteristics in damped plates. Material dissipation is modelled by using complex-valued velocities of free dilatation and shear waves in an unbounded volume. As a numerical example, solution of the classical Rayleigh–Lamb problem for a viscoelastic plate is presented to illustrate and discuss the role of dissipation in the cut-off phenomenon and in the phenomenon of veering for dispersion curves. These phenomena are explained in more detail considering a simple model, which allows accurate asymptotic analysis of the perturbation of dispersion curves in the regions of cut-off and veering.
2013
On the effect of damping on dispersion curves in plates / Manconi, Elisabetta; S., Sorokin. - In: INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES. - ISSN 0020-7683. - 50:11-12(2013), pp. 1966-1973. [10.1016/j.ijsolstr.2013.02.016]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2594445
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