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理想流体覆盖层对无限大弹性板中声表面波波速的影响

Surface Acoustic Waves in An Infinite Plate Covered by An Ideal Liquid Layer

中文摘要英文摘要

从覆盖理想流体层的各向同性半无限大弹性体中的声表面波分析开始,我们求得了表面波速度与理想流体层厚度的关系。这一结果与早期的研究和实验结果一致。随后我们分析了基体是各向同性无限大弹性板的情况,发现随着流体层厚度的不断减小,弹性板的振动开始表现为对称和反对称模态,这一结果与没有覆盖流体层的弹性板振动研究结果相吻合。

Our study starts from the interaction of a thin liquid layer and surface acoustic waves in an isotropic semi-infinite substrate, and we obtain the relationship between wave velocity and thickness of ideal fluid layer. This result is similar with earlier experimental and research results. We further extend substrate to an isotropic semi-infinite plate, at which both symmetric and anti-symmetric modes of a plate can be captured as thickness of liquid layer becomes extremely thin. This result is very close to plate vibrations without the liquid layer.

吴荣兴、王骥、杜建科

声学工程

声表面波,理想流体,传感器

surface acoustic wave ideal liquid sensor

吴荣兴,王骥,杜建科.理想流体覆盖层对无限大弹性板中声表面波波速的影响[EB/OL].(2008-01-28)[2025-08-18].http://www.paper.edu.cn/releasepaper/content/200801-785.点此复制

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