压电纤维复合材料的研究  

Interdigitated Electrodes Piezoelectric Fiber Composites

作　　者：刘永刚[1] 沈星[1] 赵东标[1] 裘进浩[1] 

机构地区：[1]南京航空航天大学,南京210016

出　　处：《宇航材料工艺》2007年第5期18-21,33,共5页Aerospace Materials & Technology

基　　金：航空科学基金(04G52042);江苏省自然科学基金资助(BK2006568)

摘　　要：以提高交叉指形电极压电纤维复合材料诱导应变和挟持应力为目的,采用有限元软件ANSYS分析了电极区聚合物参数、交叉指型电极结构和压电相体积分数对压电纤维复合材料诱导应变和挟持应力的影响。结果表明:增加电极区聚合物的介电常数或减小电极区聚合物的厚度,能够提高元件的诱导应变和挟持应力,元件诱导应变最大可达173με;减小分支电极的周期或者适当增大分支电极的宽度,可以有效地提高元件的作动性能;提高压电纤维体积分数,有利于提高元件的作动性能。In order to raise the actuating strain and stress of interdigitated electrodes （IDE） piezoelectric fiber composites, FEM is employed to analyze the influence of thickness and material constants of polymer around electrodes, dimension of electrodes and volume ratio of fibers on the composite induced strain and stress. The results show that the actuating strain and stress of interdigitated electrodes piezoelectric fiber composites can be improved much by selecting polymer with high dielectric constant or decreasing the thickness of the polymer around electrodes. And the maximum strain（ 173με） is obtained. In addition, much higher induced strain and stress can be obtained by decreasing period of IDE or increasing width of IDE and volume ratio of fibers among the composite.

关 键 词：压电纤维复合材料 有限元 交叉指形电极 聚合物 体积分数 

分 类 号：TQ342.94[化学工程—化纤工业]