LAMB WAVE TRANSMISSION THROUGH ONE-DIMENSIONAL THREE-COMPONENT FIBONACCI COMPOSITE PLATES

LAMB WAVE TRANSMISSION THROUGH ONE-DIMENSIONAL THREE-COMPONENT FIBONACCI COMPOSITE PLATES
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通过一维三分量斐波那契复合板的兰姆波传输

DOI:
10.1142/s0217984910022305
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发表时间:
2010-01
影响因子:
1.9
通讯作者:
Han, Xu
Han, Xu
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Chen, Jiu-Jiu;Wang, Qiong;Han, Xu

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用有限元方法计算了三种不同材料制成的一维三分量Fibonacci准周期复合板中Lamb波模的透射谱,分析了填充率、板厚与晶格周期之比,特别是板的代数对Lamb波模带隙的影响。带隙分裂取决于代数,这是不同于那些一维的两个组件Fibonacci复合板。通过调整不同的参数和代数可以得到工程化的带隙。
Using the finite element method, we have calculated the transmission spectra of Lamb wave modes which propagate in one-dimensional three-component Fibonacci quasiperiodic composite plates made of three different materials, and analyzed the influence of filling fraction, the ratio of the thickness of the plates to the lattice period and especially the number of generations on the band gaps of Lamb wave modes. The band gap splitting depends on the number of generations which is different from those of one-dimensional two-component Fibonacci composite plates. Engineering band gaps can be obtained by turning different parameters and the number of generations.
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