Cumulative second-harmonic generation of Lamb-mode propagation in a solid plate

DOI PDF 被引用文献6件
  • Mingxi Deng
    Physics Department, Logistical Engineering University, No. 174, Chang Jiang 2 Road, Postal Code 400016, Chongqing, People’s Republic of China

書誌事項

公開日
1999-03-15
DOI
  • 10.1063/1.369642
公開者
AIP Publishing

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<jats:p>This article describes the physical process of cumulative second-harmonic generation of Lamb-mode propagation in a solid plate. In general, cumulative second-harmonic generation of a dispersive guided wave propagation does not occur. However, the present results show that the second harmonic of Lamb-mode propagation arising from the nonlinear interaction of partial bulk waves and the restriction of the two boundaries of the solid plate does have a cumulative effect once some conditions are satisfied. Through boundary and initial conditions of excitation, the analytical expression of the cumulative second harmonic of Lamb-mode propagation has been determined. Numerical results reveal that the cumulative second-harmonic fields are symmetrical regardless of whether Lamb-mode propagation is symmetrical or antisymmetrical, and that the cumulative second-harmonic field patterns of Lamb-mode propagation are associated with the position of excitation source.</jats:p>

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