WAVE PROPAGATION IN PIEZOELECTRIC/PIEZOMAGNETIC LAYERED PERIODIC COMPOSITES

被引：45
|
作者：
Pang, Yu [2 ]
Liu, Jinxi [1 ]
Wang, Yuesheng [2 ]
Fang, Daining [3 ]
机构：
[1] Shijiazhuang Railway Inst, Dept Engn Mech, Shijiazhuang 050043, Peoples R China
[2] Beijing Jiatong Univ, Inst Engn Mech, Beijing 100044, Peoples R China
[3] Tsinghua Univ, Dept Engn Mech, Beijing 100084, Peoples R China
来源：
ACTA MECHANICA SOLIDA SINICA | 2008年 / 21卷 / 06期
基金：
中国国家自然科学基金;
关键词：
piezoelectric/piezomagnetic composite; layered periodic structure; wave; dispersion behavior;
D O I：
10.1007/s10338-008-0858-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper is concerned with the dynamic behaviors of wave propagation in layered periodic composites consisting of piezoelectric and piezomagnetic phases. The dispersion relations of Lamb waves are derived. Dispersion curves and displacement fields are calculated with different piezoelectric volume fractions. Numerical results for BaTiO3/CoFe2O4 composites show that the dispersion curves resemble the symmetric Lamb waves in a plate. Exchange between the longitudinal (i.e. thickness) mode and coupled mode takes place at the crossover point between dispersion curves of the first two branches. With the increase of BaTiO3 volume fraction, the crossover point appears at a lower wave number and wave velocity is higher. These findings are useful for magnetoelectric transducer applications.
引用
收藏
页码：483 / 490
页数：8
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