Abstract
A mathematical model of an electromechanical system excited by piezoceramic patch actuators is developed. The model is based on the solution to the dynamic contact problem for a set of flexible strips interacting with a free elastic layer. Unlike the conventional models, which describe the mechanical part by the dynamic equations for beams, plates, or shels, the proposed model, in addition to the first fundamental modes, also takes into account the higher normal modes of an elastic waveguide. Results obtained with the proposed model and with the simplified models prove to be in good agreement in the low-frequency range. Numerical examples illustrate resonance energy radiation associated with higher modes of the laminate strip-layer structure, as well as the possibility to control its directivity.
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Original Russian Text © E.V. Glushkov, N.V. Glushkova, W. Seemann, O.V. Kvasha, 2006, published in Akusticheskiĭ Zhurnal, 2006, Vol. 52, No. 4, pp. 470–479.
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Glushkov, E.V., Glushkova, N.V., Seemann, W. et al. Elastic wave excitation in a layer by piezoceramic patch actuators. Acoust. Phys. 52, 398–407 (2006). https://doi.org/10.1134/S106377100604004X
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DOI: https://doi.org/10.1134/S106377100604004X