Numerical modeling of guided ultrasonic waves generated and received by PZT wafer in a beam

J. X. Zhang; B. Q. Xu; G. D. Xu; C. G. Xu; Y. Luo; F. G. Yuan

doi:10.1117/12.2182259

4 May 2015 Numerical modeling of guided ultrasonic waves generated and received by PZT wafer in a beam

J. X. Zhang, B. Q. Xu, G. D. Xu, C. G. Xu, Y. Luo, F. G. Yuan

Proceedings Volume 9543, Third International Symposium on Laser Interaction with Matter; 95430G (2015) https://doi.org/10.1117/12.2182259
Event: Third International Symposium on Laser Interaction with Matter, 2014, Jiangsu, China

Abstract

The spectral finite element method (SFEM) is developed to predict guided ultrasonic waves in the surface-bonded piezoelectric wafer and beam structure. The Timoshenko beam theory, the Euler-Bernoulli beam theory and linear piezoelectricity are used to model the base beam and electric-mechanical behavior of the piezoelectric wafer respectively. Using Hamilton’s principle, the governing equations are obtained in the time domain, and then the SFEM are formulated from coupled differential equations of motion transformed into the frequency domain via the discrete Fourier transform. The SFEM is used to analyze the dispersion characteristics, mode conversion of guided waves and the interaction of waves and notch. The high accuracy of the present SFEM is verified by comparing with the finite element method results.

Citation Download Citation

J. X. Zhang, B. Q. Xu, G. D. Xu, C. G. Xu, Y. Luo, and F. G. Yuan "Numerical modeling of guided ultrasonic waves generated and received by PZT wafer in a beam", Proc. SPIE 9543, Third International Symposium on Laser Interaction with Matter, 95430G (4 May 2015); https://doi.org/10.1117/12.2182259

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