利用新型机械超材料实现张扭耦合变形翼

IF 5 1区工程技术 Q1 ENGINEERING, AEROSPACE

Aerospace Science and Technology Pub Date : 2024-11-15 DOI:10.1016/j.ast.2024.109745

Xueren Zhu , Jiaying Zhang , Wei Chen , Huaiyuan Gu

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引用次数: 0

摘要

利用张扭耦合超材料作为翼梁，提出了一种新型张扭耦合变形翼。拉伸-扭转耦合变形是通过堆叠具有拉伸-剪切耦合行为的单元格实现的。建立了一个有限元模型来研究单元单元的耦合行为，并通过数值方法探讨了单元配置对拉伸剪切耦合特性的影响。利用选择性激光烧结（SLS）制造的样品进行了一系列静态测试，分析并验证了超材料的拉伸-扭转耦合。然后将超材料应用于变形机翼，以实现自适应扭转。研究发现，通过相对较小的致动力就能实现有价值的机翼扭转，从而显著提高整体气动性能。这种实现变形翼扭曲变形的新方法降低了对其驱动系统的要求。

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Tension-twist coupling morphing wing using a novel mechanical metamaterial

A novel tension-twist coupling morphing wing is proposed using tension-twist coupling metamaterials as the wing spar. The tension-twist coupling deformation was achieved by stacking of unit cells with tension-shear coupling behaviour. A finite element model was created to study the coupling behaviour of the unit cell, where the effect of cell configuration on the tension-shear coupling properties were numerically explored. The tension-twist coupling of the metamaterials was analysed and validated by a set of static tests using samples fabricated by selective laser sintering (SLS). The metamaterial was then implemented into a morphing wing to achieve adaptive twist. It was found that a valuable wing twist can be achieved by a relatively small actuation force, which can lead to a significant improvement in the overall aerodynamic performance. This novel way of realising the twist deformation of morphing wing reduces the demand for its driving system.

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来源期刊

Aerospace Science and Technology 工程技术-工程：宇航

CiteScore

10.30

自引率

28.60%

发文量

654

审稿时长

54 days

期刊介绍： Aerospace Science and Technology publishes articles of outstanding scientific quality. Each article is reviewed by two referees. The journal welcomes papers from a wide range of countries. This journal publishes original papers, review articles and short communications related to all fields of aerospace research, fundamental and applied, potential applications of which are clearly related to: • The design and the manufacture of aircraft, helicopters, missiles, launchers and satellites • The control of their environment • The study of various systems they are involved in, as supports or as targets. Authors are invited to submit papers on new advances in the following topics to aerospace applications: • Fluid dynamics • Energetics and propulsion • Materials and structures • Flight mechanics • Navigation, guidance and control • Acoustics • Optics • Electromagnetism and radar • Signal and image processing • Information processing • Data fusion • Decision aid • Human behaviour • Robotics and intelligent systems • Complex system engineering. Etc.