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| Received:December 12, 2014 Revised:March 08, 2015 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201603017 |
| KeyWord:PMN-PT single crystal elastic material orthotropic material SH waves dispersion relation |
| Author | Institution |
| 孔艳平 |
石家庄铁道大学 工程力学系, 石家庄 |
| 聂国权 |
石家庄铁道大学 工程力学系, 石家庄 |
| 刘金喜 |
石家庄铁道大学 工程力学系, 石家庄 |
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| Abstract: |
| The propagation of SH waves in a sandwich structure consisting of a PMN-PT single crystal layer and two different elastic half-spaces is analytically investigated.The PMN-PT piezoelectric crystals are being polarized along [011]c of the cubic reference directions so that the effective macroscopic symmetries is mm2.The cutting angle of the PMN-PT single crystal is θ.Based on the basic equations of the orthotropic piezoelectric material and elastic material,the dispersion equations are obtained in determinant form by interface continuous conditions.The numerical examples are presented to show that the phase velocity is sensitive to the cutting angle of the PMN-PT and the material properties.The results of the paper are useful and important for surface acoustic wave devices. |