ONE-DIMENSIONAL PHONONIC CRYSTAL SLABS BORDERED WITH ASYMMETRIC UNIFORM LAYERS
We study the propagation of Lamb waves in a onedimensional phononic crystal slabs bordered with asymmetric uniform layers based on the supercell plane wave expansion method (SC-PWE). The phononic crystal slabs are made of silicon and tungsten. The uniform substrate and superstate layers can be tungsten layer, rubber layer or one is a tungsten layer and another is a rubber layer. The thickness or material of the substrate is different from that of the superstrate. The validity is proved by using the finite-element (FE) method with the Comsol Multiphysics 3.5a. The results show that the band structure can be tuned by changing the thickness of the substrate or the superstrate. These structures may be used as filters, sensors or wave guides.
SC-PWE Lamb waves Phononic crystal Band gap structure
Hong-bo Zhang Jiu-jiu Chen
State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, College of Mechanical and Vehicle Engineering, Hunan University, Changsha, 410082
国际会议
深圳
英文
226-230
2011-12-09（万方平台首次上网日期，不代表论文的发表时间）