Journal
THIN-WALLED STRUCTURES
Volume 170, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.tws.2021.108537
Keywords
Laminates; Bolted joints; Interference fit; Mechanical behavior; Failure mechanism
Categories
Funding
- National Natural Science Foundation of China [51975472]
- National Defense Basic Scientific Research of China [JCKY2019205B002]
Ask authors/readers for more resources
This paper investigates the impact of different fasteners on the mechanical behavior and failure mechanism of composite interference-fit joints. Results indicate that interference-fit with sleeved fasteners significantly improves bearing performance in joints, with initial failure load and ultimate bearing strength being higher than conventional bolts.
This paper aims to reveal the effect of different fasteners on the mechanical behavior and failure mechanism of composite interference-fit joints under assembly and quasi-static loading conditions. Composite single-lap and double-lap joints joined by conventional bolt and sleeved fasteners were focused on and their joint deformation and failure were characterized by the means of digital image correlation (DIC) and scanning electron microscope (SEM). Differences in failure load, bearing strength, joint stiffness, joint deformation and failure mode under different fastener fit types including neat-fit, interference-fit and interference-fit with sleeved fasteners were evaluated. Results show that the interference-fit with sleeved fasteners significantly improves the bearing performance of the joints. Under the same interference-fit, the initial failure load and ultimate bearing strength of sleeved fasteners for the composite double-lap joints are 33% and 12% greater than conventional bolt respectively. Moreover, the interference-fit with sleeved fasteners strengthens the joint bending stiffness and further alleviates the surface strain concentration compared with the interference-fit with conventional bolt. The conclusions in this article have a guiding significance for the design of composite interference-fit joints.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available