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Modelling of Lamb wave propagation in composite plate excited by surface bonded piezoelectrical actuators
Author(s) -
Karmazin Alexander,
Kirillova Evgenia,
Seemann Wolfgang,
Syromyatnikov Pavel
Publication year - 2011
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201110306
Subject(s) - lamb waves , fourier transform , acoustics , actuator , composite plate , anisotropy , surface wave , materials science , frequency domain , composite number , mechanics , physics , optics , composite material , engineering , mathematics , mathematical analysis , electrical engineering
Transient propagation of Lamb waves in a multilayered infinite composite plate with the arbitrary elastic anisotropy of each layer is considered in this paper. Integral representations of wave fields, an algorithm of computing the Green's matrix of the multilayered medium in Fourier domain and some methods of the Fourier transform inversion are used as basic analytical research instruments. The piezoelectrical transducers frequently used for Lamb wave excitation are modelled in this paper as surface sources with stresses concentrated on the boundaries of actuators. The contribution of each wave mode to a whole amplitude, focusing of Lamb waves and influence of the geometry of the surface source are discussed in this paper by numerical examples. (© 2011 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)