功能梯度压电层/压磁半空间结构中SH波传播  

Propagation of SH waves in the structure of functionally graded piezoelectric layer /piezomagnetic half space

作　　者：孔艳平[1] 田若萌 刘金喜[1] 

机构地区：[1]石家庄铁道大学工程力学系,石家庄050043

出　　处：《振动与冲击》2014年第20期176-182,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金(10972147);教育部"长江学者和创新团队"发展计划资助项目(IRT0971)

摘　　要：分析功能梯度压电层/压磁半空间结构中SH波传播特性。功能梯度压电材料沿x2方向按指数形式变化,电学边界条件分为电学短路及开路,基于推导的频散方程数值分析功能梯度压电材料的梯度系数、覆层厚度及边界条件对频散关系影响。研究成果可为研制、设计高性能声波器件提供理论参考。The propagation of SH waves in the layered plate structure consisting of a functionally graded piezoelectric layer and a piezomagnetic half space was investigated.The property of the functionally graded piezoelectric material was assumed to vary in an exponential form along x2 direction and the electrical boundary condition was taken as short circuit or open.Based on the dispersion equations,numerical examples were presented to show the influence of variations of material properties,piezoelectric layer thickness and electrical boundary on the phase velocity.The resach results can provide theoretical reference to the design of high performance acoustic devices.

关 键 词：功能梯度材料 压电材料 压磁材料 SH波 频散关系 

分 类 号：O346[理学—固体力学]