Interface-guided mode of Lamb waves in a two-dimensional phononic crystal plate*
Huang Ping-Pinga), Yao Yuan-Weia)†, Wu Fu-Genb), Zhang Xina), Li Jinga), Hu Ai-Zhena)
       
(a) Schematic configuration of the SCSC heterostructure. (b) The band structure for Lamb wave PC heterostructure after introducing longitudinal gliding separation Δ y = 0.35 mm. The filling fraction is f 1 = 0.65 and f 2 = 0.7. The gray regions delimit the absolute PBG for the prototype heterostructure. (c) The calculated displacement field at the frequency f = 44.45 kHz.