| 功能梯度磁电弹耦合结构中的间隙波 |
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| 引用本文： | 赵星,刘赛,刘金喜. 功能梯度磁电弹耦合结构中的间隙波[J]. 力学学报, 2014, 46(3): 382-388. DOI: 10.6052/0459-1879-13-294 |
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| 作者姓名： | 赵星 刘赛 刘金喜 |
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| 作者单位： | 石家庄铁道大学工程力学系, 石家庄 050043 |
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| 基金项目： | 国家自然科学基金(11272222);国家重点基础研究计划(2012CB723300)资助项目~~ |
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| 摘 要： | 研究了由均匀磁电弹半空间和功能梯度磁电弹层组成的耦合结构中间隙波的传播特性.假定功能梯度层的材料性能沿厚度方向呈指数变化，且其表面机械自由，但承受两种电磁边界条件.首先推导了频散方程，然后结合数值算例分析了功能梯度层材料性能的梯度变化、厚度及电磁边界条件对相速度的影响，结果对功能梯度磁电弹材料在声波器件中的应用具有参考价值.
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| 关 键 词： | 功能梯度层状结构 磁电弹材料 间隙波 频散特性 相速度 |
| 收稿时间： | 2013-09-11 |
GAS WAVE IN FUNCTIONALLY GRADED MAGNETO-ELECTRO-ELASTIC COUPLED STRUCTURE |
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| Affiliation: | Department of Engineering Mechanics, Shijiazhuang Tiedao University, Shijiazhuang 050043, China |
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| Abstract: | This paper investigates the propagation behaviors of air gas waves between a homogenous magneto-electro-elastic (MEE) half-space and a functionally graded MEE layer. The properties of functionally graded magneto-electro-elastic plate are assumed to vary exponentially in the direction of the thickness, and the surface is mechanically free and subjected to two kinds of electromagnetic boundary conditions. The dispersion equations are derived, and the numerical examples are provided to show the influences of graded variation, layer thickness and the electromagnetic boundary conditions on the phase velocity. The obtained results are of significance for the applications of functionally graded MEE materials to acoustic wave devices. |
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