摘要
通过采用双程形状记忆合金丝为致动材料,复合各项异性的轻木和柔性聚合物材料,设计了一种面向智能变形蒙皮的复合结构。阐述了其变形的力学原理,分析了其变形效果与形状记忆合金丝的变形量的关系。介绍了智能变形蒙皮的结构设计,采用聚合物一体化注塑成型工艺,形成全柔性一体化复合结构。最后设计实验,对器件的基本伏安变化特性、压力载荷-变形行为特性和致动时间特性进行了测试,实验结果显示复合结构实现了连续可控变形,具备一定的可承载能力,在25V驱动电压下器件达到最大变形的致动时间为0.15s。
A composite structure for smart morphing skin was designed by using two-way shape memory alloy （SMA） wires as the active component and utilizing balsa wood and flexible polymer. The mechanical principle of deformation was presented. The relationship between the deformation effect and deformation of shape memory alloy was analyzed. The structure design for smart morphing skin was introduced. A method of injection molding to finalized fully flexible composite structure to form composite structure was used. The volt-ampere and load-actuation deformation behavior of the composite structure are characterized. The results indicate that the composite structure can realize continuous deformation. The actuator can reach its maximum deformation in 0.15s at 25V.
出处
《航空精密制造技术》
2014年第2期4-7,共4页
Aviation Precision Manufacturing Technology
基金
国家自然科学基金(51105317)资助项目
关键词
智能变形蒙皮
形状记忆合金
结构设计
复合结构
变体飞行器
smart morphing skin
shape memory alloy
structure design
composite structure
morphing aircraft
