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Lamb wave propagation in the functionally graded piezoelectric–piezomagnetic material plate

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Abstract

The propagation behaviour of Lamb waves in the functionally graded piezoelectric–piezomagnetic material plate with material parameters varying continuously along the thickness direction is investigated in this paper. The power series technique is employed to solve these variable coefficient ordinary differential equations. Dispersion equations are given for different boundary conditions. In numerical examples, the influence of the variation of each parameter on dispersion curves and cut-off frequency in electrically and magnetically open cases is discussed in detail. Results show that the elastic parameters and density varying along the thickness direction obviously influence the variation of phase velocity. Some variations in electric and magnetic parameters also affect the phase velocity but the influence is too small, while others almost cannot affect the dispersion curves. Cut-off frequency is closely related to two elastic parameters and to density, whereas other parameters almost cannot influence it. All the results can provide theoretical guidance not only for the analysis and design of a magnetoelectric transducer using functionally graded materials, but also for ultrasonic nondestructive evaluation.

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Authors and Affiliations

  1. Department of Engineering Mechanics, School of Civil Engineering and Architecture, Xi’an University of Technology, Xi’an, 710048, People’s Republic of China

    Xiaoshan Cao & Junping Shi

  2. MOE Key Laboratory for Strength and Vibration, Xi’an Jiaotong University, Xi’an, 710049, People’s Republic of China

    Feng Jin

Authors
  1. Xiaoshan Cao
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  2. Junping Shi
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  3. Feng Jin
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Correspondence to Xiaoshan Cao.

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Cao, X., Shi, J. & Jin, F. Lamb wave propagation in the functionally graded piezoelectric–piezomagnetic material plate. Acta Mech 223, 1081–1091 (2012). https://doi.org/10.1007/s00707-012-0612-5

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  • DOI: https://doi.org/10.1007/s00707-012-0612-5

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