基于可变形蜂窝的柔性蒙皮力学性能分析与结构设计  

MECHANICAL PROPERTY ANALYSIS AND STRUCTURAL DESIGN OF FLEXIBLE SKIN BASED ON DEFORMABLE HONEYCOMB

作　　者：张平[1] 周丽[1] 邱涛[2] 

机构地区：[1]南京航空航天大学机械结构力学及控制国家重点实验室,南京210016 [2]沈阳飞机设计研究所,沈阳110035

出　　处：《固体力学学报》2013年第5期433-440,共8页Chinese Journal of Solid Mechanics

基　　金：国家自然科学基金(11172128和61161120323);江苏省普通高校研究生科研创新计划资助项目(CXZZ12-0139);江苏省"六大人才高峰"项目(2010-JZ-004);江苏高校优势学科建设工程资助项目资助

摘　　要：变体飞机可以在飞行中充分改变外形获得最佳气动效率以适应变化的任务环境.覆盖在结构表面的蒙皮不仅要具有良好的面内方向柔性,产生满足设计变形量的光滑连续变形,同时要提供足够的垂直平面方向刚度,维持气动构型,并将气动载荷传递到下层结构.论文提出一种在十字形可变形蜂窝表面覆盖硅胶表层的结构作为柔性蒙皮,理论分析了该柔性蒙皮在面内方向的变形机理以及十字形可变形蜂窝的形状参数对其力学性能的影响,并与仿真和试验结果进行了比较.根据后缘变弯度机翼的设计要求,给出了柔性蒙皮的设计参数范围.结果表明该柔性蒙皮具有足够的面内方向变形能力和垂直平面方向承载能力,满足变弯度机翼后缘设计要求.In order to adapt to a changing mission environment,the morphing aircraft can change its external shape for high aerodynamic efficiency.The skin covering on the aircraft structure should not only have a good in-plane flexibility to produce a smooth and continuous design deformation,but also provide adequate out-of-plane stiffness to maintain the aerodynamic configuration and transfer aerodynamic loads to the underlying structure.In this paper,a kind of flexible skin made up of the cruciform honeycomb overlying a silastic panel is proposed.The in-plane deformation mechanism of the flexible skin together with the effect of the cruciform honeycomb shape parameters on the mechanical property of the flexible skin are theoretically analyzed,and the analytical results are compared with the simulation and experimental results.According to the design requirements of the variable camber trailing edge wing,the design parameters ranges of the flexible skin are given out.The results show that the flexible skin can provide enough in-plane deformation ability as well as out-of-plane bearing capacity satisfying the design requirements of the variable camber trailing edge wing.

关 键 词：可变形蜂窝 柔性蒙皮 后缘边弯度机翼 力学性能 结构设计 

分 类 号：V250[一般工业技术—材料科学与工程]