压电纤维复合材料的静电场分析  

Research on Electrostatic Field of Interdigitated Electrodes Piezoelectric Fiber Composites

作　　者：刘永刚[1] 沈星[1] 赵东标[2] 裘进浩[1] 

机构地区：[1]南京航空航天大学智能材料与结构航空科技重点实验室,南京210016 [2]南京航空航天大学机械电子工程系,南京210016

出　　处：《人工晶体学报》2007年第3期596-600,共5页Journal of Synthetic Crystals

基　　金：航空科学基金(No.04G52042);武器装备预研基金;江苏省自然科学基金(BK2006568)项目

摘　　要：采用有限元法分析了外电压作用于压电纤维复合材料时的静电场分布,讨论了静电场对元件极化和作动性能的影响,研究了电极区聚合物的介电常数和厚度尺寸,及其IDE宽度和周期对压电纤维复合材料静电场的影响,研究结果表明:增加电极区聚合物的导电性,压电纤维复合材料静电场可以得到显著提高,最大可以提高54倍;减小电极区聚合物的厚度,同样可以显著提高静电场,最大可以提高55倍。IDE参数对电场的均匀性区域大小和电场强度大小影响也比较大。The electrostatic field distribution of interdigitated electrodes piezoelectric fiber composites （IDEPFCs） was analyzed by finite element method in this paper. The impact of electrostatic field on poling progress and actuation is discussed. Then the influence rules of material dielectric constants of polymer around electrodes, polymer＇s geometry parameters between electrodes and piezoelectric fibers, the electrodes width and period on electrostatic field were researched. The results show that the electrostatic field can be improved much by increasing the conductivity of the polymer around electrodes, and the maximum electric field intensity （54 times higher） was got. In addition, much higher electrostatic field of IDEPFCs can be got by decreasing the thickness of the polymer around electrodes, and the maximum electric field intensity （55 times higher） was got.

关 键 词：静电场 有限元法 压电纤维复合材料 交叉指形电极 介电常数 

分 类 号：TB33[一般工业技术—材料科学与工程]