Design-experimental analysis of strength of composite flange with a delamination defect

This paper presents the results of a computational and experimental study of the strength and rigidity of a composite flange with a defect in form of delamination. The locations of interlayer cracks at different loading levels are determined. It is shown that the L-shaped structurally similar elemen...

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Published inIOP conference series. Materials Science and Engineering Vol. 286; no. 1; pp. 12030 - 12035
Main Authors Pisarev, P V, Anoshkin, A N, Osokin, V M, Turyshev, S V
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.12.2017
Subjects
Bearing capacity
Crack initiation
Delamination
Design defects
Fracture mechanics
Interlayers
Mathematical models
Numerical models
Stress analysis
Stress distribution
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Abstract This paper presents the results of a computational and experimental study of the strength and rigidity of a composite flange with a defect in form of delamination. The locations of interlayer cracks at different loading levels are determined. It is shown that the L-shaped structurally similar element is destroyed by the delamination in the corner zone, without breaking the fibers of the layers with partial preservation of the bearing capacity. Based on the results of numerical simulation, stress and strain fields were obtained in and the strength of the structure was evaluated by the criterion of maximum stresses in layers. Analysis of stress fields showed that when testing flange samples, the most dangerous, determining the fracture initiation of the structure, are regular tensile interlayer stresses. The verification of the developed numerical model is carried out.
AbstractList This paper presents the results of a computational and experimental study of the strength and rigidity of a composite flange with a defect in form of delamination. The locations of interlayer cracks at different loading levels are determined. It is shown that the L-shaped structurally similar element is destroyed by the delamination in the corner zone, without breaking the fibers of the layers with partial preservation of the bearing capacity. Based on the results of numerical simulation, stress and strain fields were obtained in and the strength of the structure was evaluated by the criterion of maximum stresses in layers. Analysis of stress fields showed that when testing flange samples, the most dangerous, determining the fracture initiation of the structure, are regular tensile interlayer stresses. The verification of the developed numerical model is carried out.
Author Osokin, V M
Anoshkin, A N
Pisarev, P V
Turyshev, S V
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Cites_doi 10.1016/j.compositesa.2016.10.027
10.1016/j.compositesa.2015.08.026
10.15593/perm.mech/2014.2.01
10.1016/j.compositesb.2016.10.064
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Copyright Published under licence by IOP Publishing Ltd
2017. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.
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References 1
Anoshkin A N (2) 2016; 156
3
Grinev M A (8) 2015; 4
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6
Anoshkin A N (7) 2015; 43
Clifford J (4) 2016
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SubjectTerms Bearing capacity
Crack initiation
Delamination
Design defects
Fracture mechanics
Interlayers
Mathematical models
Numerical models
Stress analysis
Stress distribution
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Title Design-experimental analysis of strength of composite flange with a delamination defect
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