DAP增强梁结构形状控制的机理研究  

STATIC DEFORMATION OF A BEAM WITH DIRECTIONAL ATTACHED PIEZOELECTRIC ELEMENTS

作　　者：朱建国[1] 骆英[1] 柳祖亭[1] 

机构地区：[1]江苏大学理学院,镇江212013

出　　处：《力学与实践》2003年第6期34-37,共4页Mechanics in Engineering

基　　金：国家自然科学基金(10072026);江苏大学高级技术人才科研启动基金(6810000011)

摘　　要：对称粘贴在梁结构上下表面上的压电元件在外部电场的作用下能使梁结构发生弯曲变形。通过分析驱动构件与结构中的应变分布,采用定向固定的压电元件(DAP,即directional attached piezoelectric)来代替传统的压电元件(CAP,即conventional attached piezoelectric),减小了驱动构件的横向效应,提高了压电驱动的效率,并进行了实验对比验证。The rectangular beam with dual surface bonded piezoelectric actuators can achieve a pure bending deformation by an external electric field. The strain distribution of the actuators and the beam are analyzed and based on the analytical expressions of strains, the directional attached piezoelectric elements, instead of the conventional attached piezoelectric elements, are used as actuators to reduce their effective transverse stiffness and enhance the actuating effectiveness. In the end, the deformations of two beams with directionally attached piezoelectric elements and the conventional piezoelectric elements are compared by static experiments.

关 键 词：DAP增强梁 梁结构 压电驱动 定向固定 变形分析 横向效应 应变分布 结构力学 

分 类 号：TU311[建筑科学—结构工程]