复合材料科学与工程 ›› 2025, Vol. 0 ›› Issue (5): 22-30.DOI: 10.19936/j.cnki.2096-8000.20250528.003

• 基础与力学性能研究 • 上一篇    下一篇

拉伸载荷作用下玻璃纤维复合材料-铝合金双钉混合连接接头失效行为数值研究

杨晓1, 贺娜2, 肖鹏1, 朱强1, 蔡伟3*, 胡海晓2,4, 曹东风3   

  1. 1.中国特种飞行器研究所, 荆门 448035;
    2.武汉理工大学 理学院, 武汉 430070;
    3.武汉理工大学 材料复合新技术国家重点实验室, 武汉 430070;
    4.先进能源科学与技术广东省实验室佛山分中心(佛山仙湖实验室), 佛山 528000
  • 收稿日期:2024-02-23 出版日期:2025-05-28 发布日期:2025-07-11
  • 通讯作者: 蔡伟(1996—),男,博士,副研究员,主要从事先进复合材料结构力学方面的工作,caiwei199696@whut.edu.cn。
  • 作者简介:杨晓(1993—),男,工程师,主要从事飞机强度分析方面的工作。
  • 基金资助:
    国家自然科学基金(52273080)

Numerical study of failure behavior of glass fiber composite material and aluminum alloy double-bolt hybrid joint under tensile loading

YANG Xiao1, HE Na2, XIAO Peng1, ZHU Qiang1, CAI Wei3*, HU Haixiao2,4, CAO Dongfeng3   

  1. 1. China Special Vehicle Research Institute, Jingmen 448035, China;
    2. School of Science, Wuhan University of Technology, Wuhan 430070, China;
    3. State Key Laboratory of Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China;
    4. Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Foshan 528000, China
  • Received:2024-02-23 Online:2025-05-28 Published:2025-07-11

摘要: 复合材料与金属材料连接设计问题是飞机结构设计中最为关键的问题,深入研究复合材料-金属机械连接结构力学性能与失效模式,对提高飞机复合材料-金属混合结构安全性和可靠性具有重要意义。因此,本文基于有限元方法建立了拉伸载荷下正交编织GFRP层合板和铝合金板双钉混合连接接头失效数值分析模型,并进行了相应的有限元数值仿真模拟和模型试验,数值与试验结果对比表明数值模型具有较高的准确性。在此基础上,结合试验和数值结果,探究了拉伸载荷作用下纯螺栓连接接头和胶螺混合连接接头失效模式和承载能力的差异。研究发现,胶螺混合连接接头中的胶层可以降低螺栓孔附近的应力集中,提高整体连接结构的刚度,且胶螺混合连接接头的承载力相较于纯螺栓连接接头的承载力提高了27.8%。该研究结果可为复合材料-金属连接结构设计提供参考。

关键词: GFRP, 铝合金, 接头, 有限元仿真, 失效模式, 承载能力

Abstract: The design of the joint between composite and metal material is a key critical problem in aircraft structural design. It is of great significance to deeply study the mechanical properties and failure modes of composite and metal mechanical connection structures to improve the safety and reliability of aircraft composite and metal hybrid structures. Therefore, this paper established a numerical failure prediction model for the double-bolt hybrid joint of orthogonal braided GFRP laminates and an aluminum alloy plate subjected to tensile loading based on the finite element method. The related finite element simulation analysis and model tests were carried out. The comparison of numerical and experimental results show that the presented numerical model has high accuracy. On this basis, combined with the experimental and numerical results, the differences on failure modes and load bearing capacities between the pure bolted joint and the bonded-bolted hybrid joint under tensile loading were investigated. It is found that the adhesive layer of bonded-bolted hybrid joint can reduce the stress concentration near the bolt hole and improve the stiffness of the whole connection structure. Moreover, the load bearing capacity of bonded-bolted hybrid joint increases by 27.8% compared to pure bolted joint. The research results can provide some useful references for the design of composite-metal connection structure.

Key words: GFRP, aluminum alloy, joint, finite element simulation, failure mode, load bearing capacity

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