An analytical approach to predict the mechanical behavior of single-lap single-bolt composite joints reinforced with carbon nanofibers

In the present research, the stiffness and the damage initiation load of single-lap composite bolted joints (SLJs) reinforced with carbon nanofibers (CNFs) were studied. To this end, an analytical approach was developed and in the first step, the spring-mass model was modified. By having the elastic...

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Bibliographic Details
Published in:Composite structures 2019-05, Vol.215, p.116-126
Main Authors: Shamaei-Kashani, A.R., Shokrieh, M.M.
Format: Article
Language:English
Subjects:
Analytical approach
Carbon nanofiber
Composites
Experiment
Single-lap bolted joint
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Summary:In the present research, the stiffness and the damage initiation load of single-lap composite bolted joints (SLJs) reinforced with carbon nanofibers (CNFs) were studied. To this end, an analytical approach was developed and in the first step, the spring-mass model was modified. By having the elastic properties of the fiber, matrix and nano reinforcement, layup and geometrical parameters of the joint and using the modified spring-mass model, the stiffness of the joint was predicted. Then, by calculating the modulus and the stress concentration factor of a unidirectional ply with a pin-loaded hole and using the maximum stress failure criteria, the damage initiation load of the joint was predicted. Two different SLJs with [−45/0/+45/90]s and [90/−452/+45]s layups with and without nanoparticles were studied. The present analytical approach was evaluated by the finite element model as well as conducting an experimental program.
ISSN:0263-8223
1879-1085
DOI:10.1016/j.compstruct.2019.02.055