Effect of riveting displacement on the mechanical behavior of CFRP bolted joints with elliptical-head non-lug self-locking rivet nut

The increasing integrated manufacturing of composite components required efficiency and reliable one-sided connection. In this paper, the effect of riveting displacement on the mechanical behavior of CFRP single-lap bolted joints with a new type of one-sided connected fastener named elliptical-head...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2023-03, Vol.125 (5-6), p.2161-2182
Main Authors: Wang, Jian, Zhu, Chunrun, Yang, Yapeng, Zhang, Yongliang, Bi, Yunbo
Format: Article
Language:English
Subjects:
Advanced manufacturing technologies
Aircraft
Aviation
Bolted joints
CAE) and Design
Computer-Aided Engineering (CAD
Damage
Deformation
Displacement
Engineering
Fatigue life
Industrial and Production Engineering
Laboratories
Load
Locking
Manufacturing
Mathematical models
Mechanical Engineering
Mechanical properties
Media Management
Metal fatigue
Numerical analysis
Original Article
Plastic deformation
Residual stress
Riveting
Shear tests
Tensile strength
Three dimensional models
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Summary:The increasing integrated manufacturing of composite components required efficiency and reliable one-sided connection. In this paper, the effect of riveting displacement on the mechanical behavior of CFRP single-lap bolted joints with a new type of one-sided connected fastener named elliptical-head non-lug self-locking (EHNL) rivet nut was studied. A three-dimensional FE model considering CFRP damage and nut material plastic deformation was developed. The whole process of the joint from nut forming to static tensile could be simulated by the FE model. The unique load-drop phenomenon in the tensile response of the joint with the EHNL rivet nut was explained. The forming quality, tensile, and fatigue behavior of joints and progressive damage of CFRP with five riveting displacements were comprehensively studied by experiments and numerical simulations. The results showed that the tensile strength increased with the increase of the riveting displacement, while the fatigue life decreased due to the larger residual stress and damage of CFRP caused by the larger riveting displacement in the nut-forming process. The fatigue life of the joint should be considered more significantly in the selection of the riveting displacement.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-023-10823-5