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Reducing Stress Concentration in the Transition Region of Coilable Ultra-Thin-Shell Booms

Leclerc, Christophe and Pellegrino, Sergio (2019) Reducing Stress Concentration in the Transition Region of Coilable Ultra-Thin-Shell Booms. In: AIAA Scitech 2019 Forum. AIAA , Reston, VA, Art. No. 2019-1522. ISBN 9781624105784. https://resolver.caltech.edu/CaltechAUTHORS:20190805-134838677

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Abstract

High stress concentrations leading to material failure have been observed in TRAC booms coiled under tension around a circular hub. The stress concentrations are typically observed in the transition region between the fully deployed and coiled sections of the boom. A numerical simulation framework is proposed to model the coiling process analyses the stress distribution in the transition region. Isotropic booms are first studied to understand the effects of the cross-section geometry and the boundary conditions during coiling. Compressive stress is reduced by 13% and 26% by using a variable curvature cross-section and adding nip rollers in the coiling mechanism respectively. For an ultra-thin glass fiber-carbon fiber composite laminate, the compressive stress is similarly reduced by 24% and 11%. The variable curvature cross-section is shown to eliminate the stress concentration in the transition region.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.2514/6.2019-1522DOIArticle
ORCID:
AuthorORCID
Pellegrino, Sergio0000-0001-9373-3278
Additional Information:© 2019 American Institute of Aeronautics and Astronautics.
Group:GALCIT
Other Numbering System:
Other Numbering System NameOther Numbering System ID
AIAA Paper2019-1522
Record Number:CaltechAUTHORS:20190805-134838677
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190805-134838677
Official Citation:Reducing Stress Concentration in the Transition Region of Coilable Ultra-Thin-Shell Booms Christophe Leclerc and Sergio Pellegrino AIAA Scitech 2019 Forum. https://doi.org/10.2514/6.2019-1522
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97655
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:06 Aug 2019 14:32
Last Modified:03 Oct 2019 21:33

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