A Two-Dimensional Model for Pin-Load Distribution and Failure Analysis of Composite Bolted Joints

Multibolt composite joints are widely used in aircraft structures. The determination of the pin-load distribution among the bolts is a critical step in the failure prediction of bolted joints. In this paper, a two-dimensional model of the multibolt composite structure is established for the pin-load...

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Published in:Materials 2021-06, Vol.14 (13), p.3646
Main Authors: Li, Binkai, Gong, Yu, Xiao, Hao, Gao, Yukui, Liang, Enquan
Format: Article
Language:English
Subjects:
Aircraft structures
Bolted joints
Composite materials
Composite structures
Degradation
Experiments
Failure analysis
Failure modes
Fasteners
Finite element method
Load
Load distribution (forces)
Mathematical models
Numerical analysis
Research methodology
Software
Stiffness
Stress concentration
Three dimensional models
Two dimensional models
Ultimate loads
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cited_by cdi_FETCH-LOGICAL-c313t-905a4eb7fdfab4959e3461e2a89a3040f44fb3c4b7e4230199324e741f01fa303
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creator Li, Binkai
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Xiao, Hao
Gao, Yukui
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description Multibolt composite joints are widely used in aircraft structures. The determination of the pin-load distribution among the bolts is a critical step in the failure prediction of bolted joints. In this paper, a two-dimensional model of the multibolt composite structure is established for the pin-load distribution analysis. Its accuracy is validated by experimental results and the results from a 3D finite element model. Based on the determined pin-load distribution, FE models for a laminated plate with three-row fastener joints are built for failure prediction. Hashin stress criteria and the degradation guidelines of the material stiffness with respect to the different failure modes proposed by Tserpes are applied for the failure evaluation and the material degradation, respectively. The failure location and ultimate load are well predicted, which further validates the effectiveness and applicability of the proposed model for the pin-load distribution analysis.
doi_str_mv 10.3390/ma14133646
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subjects Aircraft structures
Bolted joints
Composite materials
Composite structures
Degradation
Experiments
Failure analysis
Failure modes
Fasteners
Finite element method
Load
Load distribution (forces)
Mathematical models
Numerical analysis
Research methodology
Software
Stiffness
Stress concentration
Three dimensional models
Two dimensional models
Ultimate loads
title A Two-Dimensional Model for Pin-Load Distribution and Failure Analysis of Composite Bolted Joints
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