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力学学报  2000 

EXISTENCE AND CHARACTERISTIC RELATION OF WAVESPEED TO SURFACE ACOUSTIC WAVES ON A ROTATING PIEZOELECTRIC HALF-BODY
转动压电陶瓷体表面声波的存在性及波速特征关系

Keywords: half-body of piezoelectric ceramics,rotation with a constant angular velocity,surface acoustic waves,existence and conditions,characteristic relation of wave spT
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

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Abstract:

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.

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