| 张彤,孟庆元,王富耻.层合结构压电器件的机电耦合响应[J].计算力学学报,2005,22(2):237~241 |
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| 层合结构压电器件的机电耦合响应 |
| Electromechanical coupling effects of piezoelectric laminated devices |
| 修订日期：2003-04-02 |
| DOI：10.7511/jslx20052048 |
| 中文关键词: 压电材料 层合结构 有限元 机电耦合效应 |
| 英文关键词:piezoelectric materials,laminated structure,FEM,electromechanical coupling effects |
| 基金项目: |
| 张彤 孟庆元 王富耻 |
| [1]北京理工大学4院材料系,北京100081 [2]哈尔滨工业大学18系工程力学教研室,黑龙江哈尔滨150006 |
| 摘要点击次数: 1418 |
| 全文下载次数: 8 |
| 中文摘要: |
| 压电传感嚣和致动器都可以看成是由压电材料层和非压电(弹性)材料层交替铺设而成。对于这类任意铺设的层合板悬臂梁结构，推导出了表示力学变形与外加电场之间耦合效应的解析表达式。进而，又推导出了两类(一类为单层压电-弹性层。另一类为双层压电-弹性层)层合型悬臂梁结构机电耦合性能的解析公式。在该机电耦合模型中，包括了两个压电常数d211和d222。最后。通过比较解析解、实验值以及有限元计算结果，发现它们吻合得很好。 |
| 英文摘要: |
| Piezoelectric sensors and actuators may be considered as multilayer laminated composites consisting of alternating layers of piezoelectric and non-piezoelectric materials. A generalized analytical formulation of mechanical deformations as a function of applied electric field is derived for an arbitrary layout of such laminated cantilever beams. Based on the generalized theory developed, specific formulae for the electromechanical performance of two cantilever microactuator layout geometries, including a single piezo/elastic laminate and a bi-layed one, are derived. In the theory of the electromechanical performance of piezoelectric microactuators, the present model incorporates both d_(211) and d_(222). Furthermore, the finite element of formulation including piezoelectric materials is given. The theoretical predication is evaluated based on a comparison with results of experiments and finite element calculation. The results are in good agreement. |
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