Abstract
Shear waves (SH) propagation in piezoelectric composite under the influence of initial stress is investigated analytically and numerically. The dispersion equation of shear waves propagation in direction normal to the layering is obtained in presence of initial stress. Numerical solutions were obtained for evaluating the effect of stress on dimensionless frequency and phase velocity. The effect of stress on stop band is discussed in this study. It can be concluded from the results that initial stress has significant effect on propagation characteristics of shear waves. The variation of initial stress has small effect on the phase velocity of shear waves. This study provides insight for development of piezoelectric composite structure under the influence of initial stress.
Highlights
The propagation behavior of shear horizontal wave is most important phenomena to be understood due to its invar‐ iably application in surface acoustic wave SAW sensors
The presence of initial stress in piezoelectric composite structure introduces number of problems such as fre‐ quency shift, variation in phase velocity of SH waves that degrades the response of SAW sensors Jin et al 2005, Su et al 2005, Du et al 2007
We have considered the effect of initial stress on propagation characteristics of shear wave propagation in piezoelectric‐ piezoelectric multi‐layer structure
Summary
The propagation behavior of shear horizontal wave is most important phenomena to be understood due to its invar‐ iably application in surface acoustic wave SAW sensors. Keywords Shear wave, Initial stress, Dispersion relation, Phase velocity, piezoe‐ lectric composite structure. Qian et al 2004 investigated the effect of initial stress on characteristics of shear waves in polymer‐piezoelectric structure.
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