压电作动器对热变形层合板形状修复研究

STUDY ON THERMAL DEFORMATION-COMPENSATION FOR COMPOSITE LAMINATED PLATES USING PIEZOELECTRIC ACTUATORS

基于一阶剪切效应Mindlin板理论,建立了在热载下含分布式压电作动器的复合材料层合板有限元分析模型和控制方程,分别研究了该板在内外表面存在温差的情况下的热变形,以及使用压电作动器对热变形区域进行形状修复的问题;在分析中考虑了压电作动器与复合材料层合板间含有胶接层的影响。由典型算例结果讨论,得到如下结论:1)使用压电作动器可以有效地对复合材料层合板的表面热变形形状进行修复;2)压电作动器的分布位置对修复效果影响很大;3)在电压达到一定数值后,继续增加电压值对修复效果贡献很小。

Based on the first order shear-deformation-plate theory, a finite element analytical model of composite laminated plates with distributed PZT actuators under a thermal load is established and a corresponding governing equation is deduced. The thermal deformation of the plates induced by different temperatures on the upper and lower surfaces and the thermal deformation-compensation for the plates using PZT actuators are studied respectively. The effect of the adhesive layer between PZT actuator and plate is considered. Some typical examples are given for illustration and conclusions can be drawn： 1） the thermal deformation of composite laminated plates can be repaired by PZT actuators effectively; 2） the distribution of PZT actuators has a great influence on repairing effect of the plates; 3） the contribution of increasing voltage to the repair of thermal deformation of the plates is very limited when the voltage reached a certain level.