Investigation on interference and damage behaviours of electromagnetic riveted double-sided countersunk 30CrMnSiA/CFRP joints

被引：7

作者：

Zhang, Minghao ^{[1
]}

Cao, Zengqiang ^{[1
,2
]}

Cao, Yuejie ^{[3
]}

Zheng, Guo ^{[1
]}

Guo, Chengxiang ^{[1
]}

Wang, Yuehaoxuan ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sch Mech Engn, Xian 710072, Peoples R China

[2] NPU Xu Hang Electromagnet Technol Ltd Co, Xian 710100, Peoples R China

[3] Chongqing Jiaotong Univ, Sch Aeronaut, Chongqing 400074, Peoples R China

来源：

COMPOSITE STRUCTURES | 2024年 / 329卷

基金：

中国国家自然科学基金;

关键词：

CFRP; Riveted joint; Electromagnetic riveting; Double-sided countersunk; Damage; FIBER-REINFORCED COMPOSITES; STRESS-CONCENTRATION; FATIGUE LIFE; MECHANICAL-PROPERTIES; FAILURE PREDICTION; RESIDUAL-STRESSES; FINITE-ELEMENT; FIT; DELAMINATION; KINKING;

D O I：

10.1016/j.compstruct.2023.117824

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Carbon fibre reinforced polymer (CFRP) structures benefit from electromagnetic riveting (EMR). However, incorrect riveting parameters could result in damages in CFRP structures during the EMR process. Excessive interference size may introduce initial damages to the joints. As a result, in this paper, the damage behaviours and the interference characteristics of the 30CrMnSiA/CFRP double-sided countersunk electromagnetic riveted joints are investigated. The riveting damage experiment was conducted, with the regular pressing riveting (RPR) process as a comparison. Moreover, a progressive damage FE model considering multiple typical damage modes of CFRP was developed for EMR damage prediction. The results show that when the rivet-hole diameter increases by 5 % (4.08 mm to 4.28 mm), the average interference size of the joint under EMR and RPR processes decreases by 41 % and 53 %, respectively. Double-sided countersunk riveted joint interference size along the rivet axial distribution is not uniform, the CFRP sheet side of the interference size is relatively small. The EMR achieves a tighter, more uniform interference fit, while causing more severe riveting damages to the CFRP structure. Initial riveting damage exhibits a variety of modes, with delamination damage showing most significant sensitivity to rivet hole clearance.

引用

页数：18