Simplified Analytical Model for Predicting Neutral Cross-Section Position of Lenticular Deployable Composite Boom in Tensile Deformation

Foldable and deployable flexible composite thin-walled structures have the characteristics of light weight, excellent mechanical properties and large deformation ability, which means they have good application prospects in the aerospace field. In this paper, a simplified theoretical model for predic...

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Bibliographic Details
Published in:Materials 2021-12, Vol.14 (24), p.7809
Main Authors: Wang, Li-Wu, Bai, Jiang-Bo, Shi, Yan
Format: Article
Language:English
Subjects:
Aerospace engineering
Cross-sections
Deformation
Finite element analysis
Finite element method
Investigations
Load
Mathematical models
Mechanical properties
Methods
Tensile deformation
Thin wall structures
Weight reduction
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Summary:Foldable and deployable flexible composite thin-walled structures have the characteristics of light weight, excellent mechanical properties and large deformation ability, which means they have good application prospects in the aerospace field. In this paper, a simplified theoretical model for predicting the position of the neutral section of a lenticular deployable composite boom (DCB) in tensile deformation is proposed. The three-dimensional lenticular DCB is simplified as a two-dimensional spring system and a rigid rod, distributed in parallel along the length direction. The position of the neutral cross-section can be determined by solving the balance equations and geometric relations. In order to verify the validity of the theoretical model, a finite element model of the tensile deformation of a lenticular DCB was established. The theoretical prediction results were compared with the finite element calculation results, and the two results were in good agreement.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma14247809