Complete Band Gaps for Lamb Waves in Cubic Thin Plates with Periodically Placed Inclusions
Complete Band Gaps for Lamb Waves in Cubic Thin Plates with Periodically Placed Inclusions
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DOI：
10.1088/0256-307x/22/7/040
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发表时间：
2005-07
影响因子：
3.5
通讯作者：
Chen Jiu-Jiu-Chen-Jiu-Jiu-2081061094;Qin Bo;C. Jianchun
中科院分区：
文献类型：
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作者：
Chen Jiu-Jiu-Chen-Jiu-Jiu-2081061094;Qin Bo;C. Jianchun
本文从理论上研究了兰姆波在立方薄板中的传播，该薄板由周期性放置在基质中的固体夹杂物组成。基于三角形格子的平面波展开法，计算了平行于平板表面传播的兰姆波的频散曲线。我们发现在填充比f=0.176的硅基中嵌入W柱体的系统中，对于不同的厚度比h/a，存在全带隙，其中h是板厚，a是晶格间距。
We present a theoretical study for propagation of Lamb waves in cubic thin plates consisting of solid inclusions placed periodically in the host material. The dispersion curves of Lamb waves propagating parallel to the surfaces of the plates are calculated based on the plane wave expansion method for triangular lattices. We realize the existence of full band gaps in the systems composed of W cylinders embedded in a Si matrix with filling ratio f = 0.176 for different thickness ratios of h/a, where h is the plate thickness and a is the lattice spacing.