Surface effect on Bleustein-Gulyaev wave in a piezoelectric half-space  

作　　者：Weiqiu Chen a) Department of Engineering Mechanics,Zhejiang University,Yuquan Campus,Hangzhou 310027,China 

出　　处：《Theoretical & Applied Mechanics Letters》2011年第4期11-14,共4页力学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (11090333,10832009 and10725210)

摘　　要：Surface effect,which is attributed to the different environment surrounding the surface or near-surface atoms from that embracing the bulk atoms,may become significant when the surface-to-volume ratio of a body is large.This paper considers the effect of a plane boundary of a piezoelectric body modeled as a thin layer with specified material properties,for which a transfer relation between the state vectors at the top and bottom surfaces is derived based on the state-space formulations.The equations of surface piezoelectricity for different orders without any bias field are then presented by making use of the power series expression of the transfer matrix.The surface effect is demonstrated by considering the Bleustein-Gulyaev wave existing in a horizontally polarized piezoceramic half-space.Surface effect,which is attributed to the different environment surrounding the surface or near-surface atoms from that embracing the bulk atoms,may become significant when the surface-to-volume ratio of a body is large.This paper considers the effect of a plane boundary of a piezoelectric body modeled as a thin layer with specified material properties,for which a transfer relation between the state vectors at the top and bottom surfaces is derived based on the state-space formulations.The equations of surface piezoelectricity for different orders without any bias field are then presented by making use of the power series expression of the transfer matrix.The surface effect is demonstrated by considering the Bleustein-Gulyaev wave existing in a horizontally polarized piezoceramic half-space.

关 键 词：surface piezoelectricity plane boundary state-space formalism Bleustein-Gulyaev wave 

分 类 号：O347.4[理学—固体力学]