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Lamb waves in two-dimensional phononic crystal plate with anisotropic inclusions |
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| Authors: | Yao Yuanwei Wu Fugen Hou Zhilin Xin Zhang |
| Institution: | a Department of Physics, Guangdong University of Technology, Guangzhou 510006, China b Experiment and Educational Center, Guangdong University of Technology, Guangzhou 510006,China c Department of Physics, South China University of Technology, Guangzhou 510640, China |
| Abstract: | An analysis is given to the band structure of the two-dimensional phononic crystal plate constituted of a square array of elastic anisotropic, circular Pb cylinders embedded in elastic isotropic epoxy. The numerical results show that the band gap can be tuned by rotating the anisotropic material orientation. It is found that the influence of anisotropy on band gap of Lamb wave is clearly different from that on the band gap of bulk waves. The thickness of the system under study is a sensitive parameter to affect the influence of anisotropic materials on the normalized gap width. |
| Keywords: | Lamb wave Band gap Anisotropy |
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