摘要
变体飞机能够在飞行过程中显著地改变外形和尺寸,从而使单一的飞行器能够实现在起飞、俯冲、巡航等多种飞行状态下都具备优良的飞行性能。折叠翼变体飞机的折叠传动机构对折叠翼的结构动力学和传力特性具有显著的影响。本文设计了一种轴/轴套式的折叠传动机构,利用ANSYS有限元软件建立了有限元网格模型,采用DYNA求解器,详细求解分析了在不同驱动加载方式下折叠翼的动力响应过程和轴/轴套的应力水平。通过对数值计算结果分析,采用软驱动加载的方式可以有效地减小折叠翼传动机构的应力水平。
Morphing aircraft can change shape and size substantially in-flight to enable a single vehicle to perform multiple mission roles.The majority of shape change occurs in the wing resulting in a wide variety of changes in aerodynamic and structural features.The transmission instrument of the folding wing resolves special design,because the structure dynamics and transmission feature of folding wing will vary in motion.In this paper,a novel transmission instrument was designed using shaft and shaft sleeve,whose finite element model is established with ANSYS package.In the end,the numerical simulation under two different situations is carried out using DYNA solver,and the dynamic response process of the morphing wing as well as the stress of shaft and shaft sleeve are demonstrated in detail.According to numerical results,the soft-driven way of loading can significantly reduce the stress level of the morphing wing structure.
出处
《航空工程进展》
2011年第1期84-88,共5页
Advances in Aeronautical Science and Engineering
关键词
变体飞机
折叠翼
结构动力学
有限元素法
传动机构
morphing aircraft
folding wing
structure dynamics
finite element method
transmission mechanism
