| 基于带状单元法的电磁弹性多层板复频散特性分析 |
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| 引用本文： | 陈江义,陈花玲.基于带状单元法的电磁弹性多层板复频散特性分析[J].固体力学学报,2009,30(2). |
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| 作者姓名： | 陈江义 陈花玲 |
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| 作者单位： | 1. 郑州大学机械工程学院,郑州,450001
2. 西安交通大学机械工程学院,西安,710049 |
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| 摘 要： | 超声波在弹性介质中传播时理论上可以分为传播、非传播及衰减模式,且分别与实、虚及复波数相对应,可用复频散特性来进行描述.这一性质在电磁弹性多层板结构中同样存在.该文利用带状单元法对其进行了分析和计算.首先,利用能量守恒定律并结合介质的本构方程、平衡方程及相应边界条件构建了结构的带状单元模型,然后利用该模型获得了电磁弹性多层板的频散方程,最后以一个由压电材料BaTiO3和压磁材料CoFe2O4构成的三层板为数值分析对象,给出了波在其中传播时的复频散特性,并利用计算结果证明了当前相关文献中材料常数引用的不合理性.
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| 关 键 词： | 带状单元法 电磁弹性材料 多层结构 频散特性 |
ANALYSIS OF COMPLEX DISPERSION RELATION FOR MAGNETO-ELECTRO-ELASTIC,MULTILAYERED PLATE BASED ON STRIP ELEMENT METHOD |
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| Jiangyi Chen,Hualing Chen.ANALYSIS OF COMPLEX DISPERSION RELATION FOR MAGNETO-ELECTRO-ELASTIC,MULTILAYERED PLATE BASED ON STRIP ELEMENT METHOD[J].Acta Mechnica Solida Sinica,2009,30(2). |
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| Authors: | Jiangyi Chen Hualing Chen |
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| Institution: | 1School of Mechanical Engineering;Zhengzhou University;Zhengzhou;450001;2School of Mechanical Engineering;Xi'an Jiaotong University;Xi'an;710049 |
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| Abstract: | It is well-known that when waves travel in solid structures the motion of media is with propagation,non-propagation or evanescent modes respectively,corresponding to real,imaginary or complex wave numbers.This phenomenon can also exist in magneto-electro-elastic,multilayered structures and can be illustrated by the complex dispersion relation.In order to obtain complex dispersion relation of magneto-electro-elastic multilayered structures,the strip element method is employed in this paper.From the point of ... |
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| Keywords: | strip element method magneto-electro-elastic material multilayered structure dispersion relation |
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