使用余弦蜂窝结构的柔性尾舵的结构分析与测试

IF 2.1 3区 工程技术 Q2 ENGINEERING, AEROSPACE Aerospace Pub Date : 2024-06-08 DOI:10.3390/aerospace11060462
Jinwei Huang, Weidong Liu, Yue Zhou, Dian Liu
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引用次数: 0

摘要

本文介绍了一种基于余弦型零泊松比蜂窝结构的新型柔性舵面,以增强飞机的自适应能力,实现多条件无舵飞行。零泊松比蜂窝结构具有优异的面内和面外变形能力以及高承载能力。为了研究利用余弦蜂窝结构的柔性舵面的变形特性,本研究通过有限元模拟和三维打印实验进行了全面研究。此外,本研究还分析了蜂窝参数和布局对挠曲性能和重量的影响。由尼龙制成的柔性舵面实现了平滑一致的弦向弯曲变形,以及±25°公差范围内的均匀跨向变形,观察到的最大等效应力为 31.99 兆帕,在材料的允许应力限制(50 兆帕)范围内。有限元模拟结果表明,一旦摇杆的偏转角超过 15°,柔性控制面的实际偏转角与摇杆的偏转角之间就会出现明显的偏差。此外,这种偏差会随着摇杆旋转角度的增加而增大,而这种偏差可以通过增加柔性舵面中余弦蜂窝单元的数量来缓解。最后,利用三维打印技术成功制作了柔性舵面的原型,实验结果证实了其变形行为,与模拟结果一致,偏差小于 20%。这些研究结果证实了所设计的柔性舵面的有效变形性能,凸显了其在小型无人飞行器中的应用潜力。
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Structural Analysis and Testing of a Flexible Rudder Using a Cosine Honeycomb Structure
This paper introduces a new type of flexible rudder surface based on the cosine-type zero Poisson’s ratio honeycomb to enhance the adaptive capabilities of aircraft and enable multi-condition, rudderless flight. The zero Poisson’s ratio honeycomb structure exhibits exceptional in-plane and out-of-plane deformation capacities, as well as a high load-bearing capability. To investigate the deformation characteristics of flexible rudder surfaces utilizing cosine honeycomb structures, this study undertakes a comprehensive investigation through finite element simulation and 3D printing experiments. Moreover, this study analyzed the impact of honeycomb parameters and layout on the deflection performance and weight. The flexible rudder surface, fabricated from nylon, achieves smooth and consistent chordwise bending deformation, as well as uniform spanwise deformation within a tolerance of ±25°, and the maximum equivalent stress observed was 31.99 MPa, which is within the material’s allowable stress limits (50 MPa). Finite element simulation results indicate that once the deflection angle of the rocker exceeds 15°, a discernible deviation arises between the actual deflection angle of the flexible control surface and that of the rocker. Furthermore, this deviation escalates with increasing rocker rotation angles, and this discrepancy can be mitigated by augmenting the number of cosine honeycomb cells within the flexible rudder surface. Finally, a prototype of the flexible rudder surface was successfully produced using 3D printing technology, and the experimental results confirmed the deformation behavior, aligning with simulation outcomes with a deviation of less than 20%. These findings confirm the effective deflection performance of the designed flexible rudder surface, highlighting its potential application in small unmanned aerial vehicles.
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来源期刊
Aerospace
Aerospace ENGINEERING, AEROSPACE-
CiteScore
3.40
自引率
23.10%
发文量
661
审稿时长
6 weeks
期刊介绍: Aerospace is a multidisciplinary science inviting submissions on, but not limited to, the following subject areas: aerodynamics computational fluid dynamics fluid-structure interaction flight mechanics plasmas research instrumentation test facilities environment material science structural analysis thermophysics and heat transfer thermal-structure interaction aeroacoustics optics electromagnetism and radar propulsion power generation and conversion fuels and propellants combustion multidisciplinary design optimization software engineering data analysis signal and image processing artificial intelligence aerospace vehicles'' operation, control and maintenance risk and reliability human factors human-automation interaction airline operations and management air traffic management airport design meteorology space exploration multi-physics interaction.
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