Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13087/2694
Title: Veering of Rayleigh-Lamb waves in orthorhombic materials
Authors: Nobili, Andrea
Erbaş, Barış
Signorini, Cesare
Keywords: Veering
Rayleigh-Lamb waves
orthorhombic elastic materials
Elastic-Waves
Plates
Dispersion
Velocity
Models
Beams
Issue Date: 2022
Publisher: Sage Publications Ltd
Abstract: We analyse veering of Rayleigh-Lamb waves propagating in a plane of elastic symmetry for a thin orthotropic plate. We demonstrate that veering results from interference of partial waves in a similar manner as it occurs in systems composed of one-dimensional (1D) structures, such as beams or strings. Indeed, in the neighbourhood of a veering point, the system may be approximated by a pair of interacting tout strings, whose wave speed is the geometric average of the phase and group velocity of the relevant partial wave at the veering point. This complementary pair of partial waves provides the coupling terms in a form compatible with a action-reaction principle. We prove that veering of symmetric waves near the longitudinal bulk wave speed repeats itself indefinitely with the same structure. However, the dispersion behaviour of Rayleigh-Lamb waves are richer than that of 1D systems, and this reflects also on the veering pattern. In fact, the interacting tout string model fails whenever the dispersion branch is not guided by either partial wave. This often occurs when neighbouring veering points interact and partial waves no longer provide guiding curves.
URI: https://doi.org/10.1177/10812865211073467
https://hdl.handle.net/20.500.13087/2694
ISSN: 1081-2865
1741-3028
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu
WoS İndeksli Yayınlar Koleksiyonu

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