Effects of initial stresses on the electromechanical coupling coefficient of SH wave propagation in multilayered PZT-5H structures
Effects of initial stresses on the electromechanical coupling coefficient of SH wave propagation in multilayered PZT-5H structures
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多层PZT-5H结构中初始应力对SH波传播机电耦合系数的影响
DOI：
10.1140/epjp/i2019-12891-7
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发表时间：
2019-11
影响因子：
3.4
通讯作者：
Takali Farid
中科院分区：
文献类型：
--
作者：
Othmani Cherif;Zhang He;Lü Chaofeng;Takali Farid
机电耦合系数（K2）是声学器件中的一个关键参数，反映了压电效应对弹性波相速度的影响。该系数越高，波传播特性对电系统参数的依赖性越强。在这里，我们研究数值K2的三阶和四阶剪切波模式（SH 2和SH 3）在任意各向异性的多层PZT-5 H层压板与各种取向。采用开路（OC）和短路（SC）来确定这一关键参数，而选择SH 2和SH 3是因为它们与其他SH m模式相比具有更高的K2。此外，还考虑了初始应力的影响。结果表明，初始应力对SHm（m= 2，3）模态有显著的影响，特别是对于厚层板。分析了PZT-5 H层状结构在不同厚度比（010）-[100]与（0 - 10 -[100]）和不同周期下的SH 2和SH 3模特性。结果表明，K2随层合板的厚度比和周期的变化而变化。在具有单位厚度比和周期的层合板中，SH 2和SH 3模态的K2分别可达30%和44%。此外，还详细讨论了K_2对中间层厚度的敏感性。以SH_2模为例，讨论了其机械应力、机械位移、电位移和电势。结果表明，（[（010）-[100]/（0 - 10 -[100]/（010）-[100]）N结构在压电材料构成的声波设计中具有一些有用的性质。
The electromechanical coupling factor (K2) presents a key parameter in acoustic devices that reflects the influence of piezoelectricity on the phase velocity of elastic waves. The higher this coefficient, the stronger the dependence of the characteristics of wave propagation on the electric-system parameters. Here, we investigate numerically K2for third- and fourth-order shear wave modes (SH2and SH3) in arbitrarily anisotropic multilayered PZT-5H laminates with various orientations. The open-circuit (OC) and short-circuit (SC) are applied to determine this key parameter, while the SH2and SH3are chosen because they have a higher K2in comparison with other SHmmodes. Additionally, the effects of initial stresses are taken into account. We find that the initial stress has a significant influence on the SHm(m= 2, 3 modes, especially for thick laminates. The characteristics of SH2and SH3modes are analyzed for different thickness ratios of (010)-[100] to (0 - 10 -[100] and periods of PZT-5H layered structures. Results show that K2varies with the thickness ratio and periods of the laminates. Overall, K2can reach about 30% and 44% for SH2and SH3modes in a laminate with unit thickness ratio and period. Moreover, the sensitivity of K2to the thickness of the middle layer is discussed in detail. The mechanical stresses, mechanical displacements, electric displacements and electric potentials for SH2mode are discussed as illustrative examples. Results demonstrate that ([(010)-[100]/(0 - 10 -[100]/(010)-[100])Nstructures have some useful properties in the design of acoustic wave constructed from piezoelectric materials.
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正交各向异性功能梯度板中初始应力对导波的影响
影响因子：
5
作者：
Jiangong Yu;Ch. Zhang
通讯作者：
Ch. Zhang
DOI：
10.1016/s0129-1564(00)00058-1
发表时间：
2000-09
期刊：
--
影响因子：
--
作者：
C. Ruppel;T. Fjeldly
通讯作者：
C. Ruppel;T. Fjeldly
影响因子：
6.3
作者：
Y. Zhou;Chao-feng Lu;W. Q. Chen
通讯作者：
Y. Zhou;Chao-feng Lu;W. Q. Chen
影响因子：
2.7
作者：
F. Takali;Souhir Msedi;Cherif Othmani;A. Njeh;W. Donner;M. Ghozlen
通讯作者：
F. Takali;Souhir Msedi;Cherif Othmani;A. Njeh;W. Donner;M. Ghozlen
影响因子：
4
作者：
Lin, Chih-Ming;Lien, Wei-Cheng;Pisano, Albert P.
通讯作者：
Pisano, Albert P.