Influence of Local Delamination on Assembly Variation Modeling of Laminated Composite Beams
Publication: Journal of Aerospace Engineering
Volume 33, Issue 5
Abstract
Laminated composite components have been widely used in engineering fields, such as aerospace engineering, automotive industries, marine structures, and civil infrastructure. Due to the inherent properties of laminated composites, the impact of local delamination defects will result in a decrease of assembly dimensional precision and mechanical performance. This paper develops a modeling method to integrate the local delamination defects into the single-station assembly variation simulation procedure. First, the local deformation induced by the delamination defects is obtained by using the flexible joint model of the bimaterial interface. Then, the influence of the local displacement at the crack tip on the assembly variation propagation model is addressed. Based on the variation model, the impact of local delamination length ratio () is further studied for assembly of composite parts, and the comparisons of simulation results show that the delamination has a pronounced effect on the assembly deformation of composite components. Finally, two case studies on variation propagation modeling of a delaminated beam assembly are presented to illustrate and verify the proposed methodology.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
The work described in this paper is supported in part by a grant from the National Natural Science Foundation of China (No. 51775346). The authors are grateful for this financial support.
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Published In
Journal of Aerospace Engineering
Volume 33 • Issue 5 • September 2020
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Jan 2, 2020
Accepted: May 19, 2020
Published online: Jul 10, 2020
Published in print: Sep 1, 2020
Discussion open until: Dec 10, 2020
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