现代制造工程 ›› 2025, Vol. 540 ›› Issue (9): 99-104.doi: 10.16731/j.cnki.1671-3133.2025.09.013

• CAD/CAE/CAPP/CAM • 上一篇    下一篇

复合材料/金属螺纹连接系统预紧力衰减数值建模及试验研究

殷小健1,2, 李旭健1,2, 陶兴伟1,2, 王文超1,2, 李皓3, 刘畅4   

  1. 1 河南航天精工制造有限公司,信阳 464000;
    2 河南省紧固连接技术重点实验室,信阳 464000;
    3 天津大学机械工程学院,天津 300354;
    4 天津工业大学机械工程学院,天津 300387
  • 收稿日期:2025-01-10 出版日期:2025-09-18 发布日期:2025-09-23
  • 通讯作者: 刘畅,副教授,主要从事高端紧固件制造理论与方法的研究。E-mail:liuchang@tiangong.edu.cn。
  • 作者简介:殷小健,研究员,主要从事锻压技术与工艺设备的研究。E-mail:gaoxuemin694@126.com。
  • 基金资助:
    天津市科技计划项目(22YDTPJC00110)

Numerical modeling and experimental study of preload degradation in composite/metal threaded joint systems

YIN Xiaojian1,2, LI Xujian1,2, TAO Xingwei1,2, WANG Wenchao1,2, LI Hao3, LIU Chang4   

  1. 1 Henan Aerospace Precision Manufacturing Co.,Ltd.,Xinyang 464000,China;
    2 Henan Provincial Key Laboratory of Fastening and Connecting Technology,Xinyang 464000,China;
    3 School of Mechanical Engineering,Tianjin University,Tianjin 300354,China;
    4 School of Mechanical Engineering,Tiangong University,Tianjin 300387,China
  • Received:2025-01-10 Online:2025-09-18 Published:2025-09-23

摘要: 分别以CFRP复合材料与铝合金螺栓连接结构作为研究对象,深入分析不同被连接件材料对预紧力衰减所产生的影响。基于ABAQUS/Standard软件,构建了真实螺纹螺栓节点的参数化有限元模型,用以剖析不同因素对预紧力衰减的作用。随着被连接件厚度的增加,预紧力的衰减程度逐渐降低。应力主要集中于螺纹部位,并且被连接件厚度的增加减缓了应力的衰减。在静载工况下,当被连接件厚度分别为4.0、4.5和5.0 mm时,经过 200 h后,预紧力分别衰减了6 538、5 542和5 437 N。

关键词: 螺栓连接, 预紧力衰减, CFRP复合材料, 铝合金

Abstract: CFRP composite materials and aluminum alloy bolted structures were taken as the research objects to analyze the effects of different materials of the connected parts on the preload degradation.Based on ABAQUS/Standard software,a parametric finite element model of a real threaded bolt node was constructed to analyze the effects of different factors on the preload degradation. As the thickness of the connected parts increases,the degree of preload degradation decreases gradually. The stresses are mainly concentrated in the threaded part,and the increase in the thickness of the connected part slows down the stress degradation. Under static loading condition,the preload decayed by 6 538,5 542 and 5 437 N after 200 hours for 4.0,4.5 and 5.0 mm thicknesses of the connected parts,respectively.

Key words: bolt connection, preload degradation, CFRP composite materials, aluminum alloy

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