复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (3): 29-37.DOI: 10.19936/j.cnki.2096-8000.20220328.004

• 基础研究 • 上一篇    下一篇

纤维金属层板铆接孔微动疲劳性能优化及轻量化设计

曾鑫1,2, 王小小1,2, 平学成1,2*, 郭倩1,2, 黄琦恒3   

  1. 1.天津科技大学 机械工程学院,天津300222;
    2.天津市轻工与食品工程机械装备集成设计与在线监控重点实验室,天津300222;
    3.中铁四局集团有限公司城市轨道交通工程分公司,合肥230023
  • 收稿日期:2021-06-03 出版日期:2022-03-28 发布日期:2022-04-24
  • 通讯作者: 平学成(1975-),男,博士,教授,主要从事机械结构疲劳及复合材料等方面的研究,xuechengping@hotmail.com。
  • 作者简介:曾鑫(1997-),男,博士研究生,主要从事复合材料方面的研究。
  • 基金资助:
    国家自然科学基金资助项目(51975411);天津市自然科学基金(18JCYBJC88500);天津市研究生科研创新项目(2020YJSB072)

Optimization and lightweight design of fretting fatigue performance of riveting holes in fiber metal laminates

ZENG Xin1,2, WANG Xiao-xiao1,2, PING Xue-cheng1,2*, GUO Qian1,2, HUANG Qi-heng3   

  1. 1. College of Mechanical Engineering, Tianjin University of Science & Technology, Tianjin 300222, China;
    2. Tianjin Key Laboratory of Integrated Design and Online Monitoring forLight Industry & Food Machinery and Equipment, Tianjin 300222, China;
    3. Urban Rail Transit Engineering Branch of China Railway No. 4 Engineering Group Co., Ltd., Hefei 230023, China
  • Received:2021-06-03 Online:2022-03-28 Published:2022-04-24

摘要: 为了改善纤维金属层板铆接结构的微动疲劳性能,构建了基于临界平面法的Smith-Waston-Topper(SWT)模型用于预测裂纹萌生部位和寿命。分析了四个设计变量(板宽W/D、端距E/D、预紧力P和摩擦系数f)对层板铆接孔微动疲劳特性的影响,结果表明:疲劳损伤参数在铆钉与纤维金属层板接触边缘处最大;随着板宽和端距的增大,SWT疲劳损伤参数减小;预紧力和摩擦系数的增大,有助于SWT疲劳损伤参数减小和比载荷的增大。依据这些设计变量进行了四因素三水平二次正交组合试验设计,SWT疲劳损伤参数比优化前减小了47%。最后,在给定临界SWT损伤参数情况下,根据重量和临界载荷等因素进行轻量化设计,选择合理的Glare层板铺层方式。

关键词: 纤维金属层板, 铆接接头, 微动疲劳特性, 寿命预测, 正交试验, 复合材料

Abstract: In order to improve the fretting fatigue performance of the riveted structure of FMLs, the Smith-Waston-Topper (SWT) model based on the critical plane method was constructed to predict the crack initiation location and life of a riveted hole. The effects of design variables such as plate width W/D, end distance E/D, preload P and friction coefficient f on the SWT fretting damage are analyzed. The research results show that the fatigue damage parameter is the largest at the contact edge of the rivet and the FML. As the plate width and end distance increase, SWT fatigue damage parameters decrease. The increase of preload and friction coefficient contributes to the reduction of SWT fatigue damage parameters and the increase of specific load. A four-factor three-level quadratic orthogonal combination test design is carried out, and the SWT fatigue damage parameter is reduced by 47% compared to that without optimization. Finally, given the critical SWT damage parameters, lightweight design is carried out according to factors such as weight and critical load, and a reasonable Glare laminate method is selected.

Key words: FML, rivet joint, fretting fatigue characteristics, life prediction, orthogonal test, composites

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