航空学报 > 2022, Vol. 43 Issue (6): 526146-526146   doi: 10.7527/S1000-6893.2022.26146

用于变体飞行器的波纹板等效强度模型及其优化设计

王晨1, 杨洋1, 沈星1, 夏育颖2   

  1. 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. 斯旺西大学 工程学院, 斯望西 SA1 8EN
  • 收稿日期:2021-07-23 修回日期:2022-06-25 出版日期:2022-06-15 发布日期:2022-02-28
  • 通讯作者: 沈星,E-mail:shenx@nuaa.edu.cn E-mail:shenx@nuaa.edu.cn
  • 基金资助:
    国家自然科学基金(11872207,12111540251);航空科学基金(20180952007);江苏省优势学科建设工程

An equivalent strength model of corrugated panel and optimization design for morphing aircraft

WANG Chen1, YANG Yang1, SHEN Xing1, XIA Yuying2   

  1. 1. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    2. College of Engineering, Swansea University, Swansea SA1 8EN, UK
  • Received:2021-07-23 Revised:2022-06-25 Online:2022-06-15 Published:2022-02-28
  • Supported by:
    National Natural Science Foundation of China (11872207, 12111540251); Aeronautical Science Foundation of China (20180952007); A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions

摘要: 变体飞行器的结构既需要改变气动外形,也需要传递载荷。针对一种变体翼尖的设计需要,使用能量方法,构建了等效力学模型。在实现对波纹板刚度特性等效替代的同时,获得了波纹板整体应变与结构内局部应变的转换关系,从而可以通过对波纹板局部材料进行失效判定,实现对波纹板整体失效应变的预测;经过实验验证,该等效力学模型的解析解与实验值相比平均误差在10%以内。通过对波纹板几何尺寸进行参数分析,获得了单元几何参数对波纹板失效应变和等效刚度的影响关系。最终,针对变体飞行器承载与变形的设计需要,对波纹板进行了优化设计,进一步评估了波纹板结构的强度与刚度特性,为变体翼尖的设计提供了依据。

关键词: 波纹板, 等效模型, 变体飞行器, 变体翼尖, 优化设计

Abstract: Morphing structures need to simultaneously change shape and carry loads. To satisfy the design requirements of a morphing wingtip, an equivalent model of corrugated panels is established based on the energy method. The model can represent the stiffness properties of the corrugated structures effectively and predict the failure strain of the corrugated structure by converting the effective deformation of the corrugated panels to the local strain in the structure. The equivalent model is verified by experiments and the average error between the analytical results from the equivalent model and the test results is less than 10%。The influence of the corrugation geometry on the failure strain and bending stiffness of the corrugated panel is investigated by parametric analysis. Finally, the corrugated panels are optimized to meet the requirements of shape-changing and load-carrying, which further evaluates the stiffness and strength properties of the corrugated structures and provides the guidance for the design of the morphing wingtip.

Key words: corrugated panel, equivalent model, morphing aircraft, morphing wingtip, optimization design

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