Effects of countersunk hole geometry errors on the fatigue performance of CFRP bolted joints
Effects of countersunk hole geometry errors on the fatigue performance of CFRP bolted joints
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沉头孔几何误差对CFRP螺栓接头疲劳性能的影响
DOI：
10.1177/09544054211028534
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发表时间：
2021-07
期刊：
影响因子：
--
通讯作者：
Li Yonghang
中科院分区：
文献类型：
--
作者：
Qin Xuda;Cao Xingfeng;Li Hao;Zhou Meng;Ge Ende;Li Yonghang
埋头螺栓连接具有良好的气动性能和可靠性，是飞机碳纤维复合材料构件最常用的连接方式之一。然而，沉头孔加工过程中不可避免地伴随着几何误差，这将直接影响连接结构的力学性能。本文通过数值模拟和试验研究了沉头孔几何误差对CFRP螺栓连接疲劳性能的影响。建立了具有设计几何误差的CFRP沉头螺栓连接有限元模型，通过疲劳寿命和失效形式验证了有限元分析的合理性。研究了CFRP螺栓连接结构在疲劳载荷作用下的失效机理，分析了孔加工几何误差（包括沉头圆角半径、沉头深度和沉头角度）对疲劳寿命的影响。根据疲劳寿命与几何误差的关系，确定了CFRP螺栓连接沉头孔的相应公差。研究结果可为制定合理的CFRP连接孔加工几何精度要求提供参考。
Due to good aerodynamic performance and reliability, countersunk bolt joint is one of the most commonly used connection methods for carbon fiber reinforced polymer (CFRP) components in the aircraft. However, the countersunk hole machining process is inevitably accompanied by geometric errors, which will directly affect the mechanical properties of the joint structure. This paper presents a numerical and experimental investigation on the effect of countersunk hole geometry errors on the fatigue performance of CFRP bolted joints. FE model of CFRP countersunk bolted joints with designed geometry errors are established, and the rationality of the FE analysis was verified by fatigue life and failure forms. The CFRP bolted structure failure mechanism under fatigue load and influence of hole-making geometry error (including countersunk fillets radius, countersunk depth, and countersunk angle) on the fatigue life are investigated. Based on the relationship between fatigue life and the geometry error, the corresponding tolerances for CFRP bolt joint countersunk hole are determined as well. The research results can provide a reference for establishing reasonable geometric accuracy requirements for CFRP joint hole machining.
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DOI：
10.1177/1464420720936723
发表时间：
2020-06
期刊：
Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications
影响因子：
--
作者：
M. Feyzi;S. Hassanifard;A. Varvani-Farahani
通讯作者：
M. Feyzi;S. Hassanifard;A. Varvani-Farahani
DOI：
10.1243/09544054jem1662
发表时间：
2010-01
期刊：
Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture
影响因子：
--
作者：
R. Negarestani;M. Sundar;M. Sheikh;P. Mativenga;L. Li;Z. L. Li;P. L. Chu;C. C. Khin-C.;H. Zheng;G. Lim
通讯作者：
R. Negarestani;M. Sundar;M. Sheikh;P. Mativenga;L. Li;Z. L. Li;P. L. Chu;C. C. Khin-C.;H. Zheng;G. Lim
影响因子：
2.9
作者：
Youjiang Wang
通讯作者：
Youjiang Wang
沉孔深度对AA2024-T3合金铆接试样拉拉疲劳行为的影响
影响因子：
4
作者：
Sen Tian;Changyou Li;Weibing Dai;Dawei Jia;Hongzhuang Zhang;Mengtao Xu;Yumeng Yuan;Yuzhuo Liu;Yimin Zhang
通讯作者：
Yimin Zhang
影响因子：
6.3
作者：
Egan, B.;McCarthy, M. A.;McCarthy, C. T.
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McCarthy, C. T.