摘要
对转动半无限压电陶瓷体的表面声波给出了存在性证明及其条件．结果发现：对应于不转动时的 Ｒａｙｌｅｉｇｈ表面声波与 Ｂｌｅｕｓｔｅｉｎ－Ｇｕｌｙａｅｖ表面声波在转动情形是否仍为表面波有赖于压电体的材料参数；如果转动时表面声波存在，则这些表面声波是色散的．最后，以ＰＺＴ－５Ｈ压电陶瓷材料为例定量给出了波速－转动角速度的特征曲线．
This paper is to display existence and its conditions to a surface acoustic wave propogating along surface of a half-body of piezoelectric ceramics with a rotation of constant angular velocity. It is found that when the half-body rotates, whether or not a surface acoustic wave, which corresponds to either the Rayleigh wave or the Bleustein-Gulyaev wave on the surface of the half-body without rotation, exists is dependent upon those material parameters of the piezoelectric body. If a surface acoustic wave exists when the piezoelectric body rotates, the results exhibit that the surface wave is dispersive. As an example, finally, some quantitative results of the characteristic relation between the wave speed and the rotation angular velocity are given for the PZT-5H material of piezoelectric ceramics.
出处
《力学学报》
EI
CSCD
北大核心
2000年第6期707-716,共10页
Chinese Journal of Theoretical and Applied Mechanics
基金
国家自然科学基金!(19772014)
美国国家自然科学基金!(MSS-9308341)
美国海军研究项目!(N00014-9
关键词
半无限压电陶瓷体
匀速转动
表面声波
存在性
波速特征关系
half-body of piezoelectric ceramics, rotation with a constant angular velocity, surface acoustic waves, existence and conditions, characteristic relation of wave spT
