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Simplified Analytical Model for Predicting Neutral Cross-Section Position of Lenticular Deployable Composite Boom in
Li-Wu Wang1,2, Jiang-Bo Bai3,4, Yan Shi4,5
1School of Civil Engineering, Southeast University, Nanjing 210096, China.
Abstract:
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.
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