The invention discloses a bimorph large-displacement deformable wing based on a pre-compression laminated piezoelectric composite material and a method thereof. The deformation wings are selected at certain longitudinal positions, and middle-layer extending sheets of the middle-layer piezoelectric composite material bimorph are fixedly connected with the root parts of a group of wing ribs with arc-shaped grooves; extending pieces of the upper-layer piezoelectric bimorph and the lower-layer piezoelectric bimorph at all longitudinal positions are fixedly connected with adapter shaft heads, bearings are arranged on all the shaft heads in a sleeving mode and can slide or roll in wing rib arc-shaped grooves, and therefore transverse same-curvature bending association of the multiple layers of piezoelectric bimorph is achieved, and the multiple layers of piezoelectric bimorph and wing ribs rotate around a neutral axis of a multi-layer structure to be decoupled. Meanwhile, a pre-stretched elastic skin is laid on the wing ribs in the longitudinal direction, and pressure is applied to the middle-layer piezoelectric bimorph through the wing ribs; and an axial pre-pressure assembly is also used for applying pressure to the upper and lower piezoelectric composite bimorph. According to the bimorph large-displacement deformable wing based on the pre-compression laminated piezoelectric composite material and the method thereof, a feasible scheme can be provided for continuous deformation of the airfoil of a small aircraft.
本发明公开了一种基于预压缩层叠式压电复合材料双晶片大位移变形翼及其方法。变形翼选择在某些纵向位置处,将中层压电复合材料双晶片的中间层伸出片与一组带弧形槽的翼肋根部固连;将上下层压电双晶片在各纵向位置处的伸出片与转接轴头固连,在各轴头上套轴承,这些轴承可在翼肋弧形槽中滑动或滚动,从而实现多层压电双晶片横向同曲率弯曲关联,并与翼肋绕多层结构中性轴转动解耦。同时翼肋上铺设纵向有预拉伸的弹性蒙皮,经翼肋对中层压电双晶片施加压力;还利用了轴向预压力组件对上下层压电复合材料双晶片施加压力。本发明提出的基于预压缩层叠式压电复合材料双晶片大位移变形翼及其方法,能够为小型飞行器翼面的连续变形提供一种可行方案。
Bimorph large-displacement deformable wing based on pre-compression laminated piezoelectric composite material and method thereof
基于预压缩层叠式压电复合材料双晶片大位移变形翼及其方法
2020-05-15
Patent
Electronic Resource
Chinese
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