激光激励下压电板的Lamb波色散

Gen Chen, Jinfeng Zhao, Yongdong Pan
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引用次数: 0

摘要

研究了压电板在激光激励下的色散特性。计算了电开边界和电闭边界条件下压电板的LAMB波频散曲线。发现兰姆波的色散曲线受电边界的影响很大。计算了压电板在烧蚀和热弹性激光激励下的光谱。结果表明,光谱与激光源的类型有关。虽然在激光激发下可以产生色散曲线的大多数模式,但烧蚀和热弹性激发下对应模式的波能差异很大,这为实验研究提供了可能的理论依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Lamb wave dispersion of piezoelectric plate under laser excitation
The dispersion characteristics of a piezoelectric plate under the laser excitation are studied. The LAMB wave dispersion curves of the piezoelectric plate are calculated for both electrically open and closed boundary conditions. It is found that the dispersion curves of LAMB wave are greatly influenced by the electrical boundary. The spectra of the piezoelectric plate under the ablation and thermo-elastic laser excitation are also calculated. It is shown that the spectrum is dependent on the type of laser source. Although most modes of the dispersion curves can be generated under the laser excitation, the wave energy of the corresponding modes are quite different for the ablation and thermo-elasticexcitation, and this provides the possible theoretical basis for the experimental investigation.
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