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Stress Concentration and Material Failure During Coiling of Ultra-Thin TRAC Booms

Leclerc, Christophe and Pedivellano, Antonio and Pellegrino, Sergio (2018) Stress Concentration and Material Failure During Coiling of Ultra-Thin TRAC Booms. In: 2018 AIAA Spacecraft Structures Conference. American Institute of Aeronautics and Astronautics , Reston, VA, Art. No. 2018-0690. ISBN 9781624105302. https://resolver.caltech.edu/CaltechAUTHORS:20190816-144340271

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Abstract

Ultra-thin TRAC booms are a promising technology for large deployable structures for space applications. A manufacturing process producing composites TRAC booms with flange thickness as low as 53 μm is proposed. Coiling behavior around hub with radii ranging from 19.1 mm to 31.8 mm is studied both experimentally and through finite element simulations. Due to the thinness of the TRAC boom, a buckle appears in the inner flange, in the transition region from the fully deployed to the coiled configurations. Material failure is observed at this location, and this correlates well with stresses computed in simulation, coupled with the fiber microbuckling failure criterion. Reducing the thickness, either by changing the laminate or by improving the manufacturing process, is shown to reduce stresses, allowing coiling around smaller hubs without material failure.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.2514/6.2018-0690DOIArticle
ORCID:
AuthorORCID
Pellegrino, Sergio0000-0001-9373-3278
Additional Information:© 2018 American Institute of Aeronautics and Astronautics. The authors acknowledge financial support from the Northrop Grumman Corporation, the Natural Sciences and Engineering Research Council of Canada and the Keck Institute for Space Studies.
Group:GALCIT, Keck Institute for Space Studies, Space Solar Power Project
Funders:
Funding AgencyGrant Number
Northrop Grumman CorporationUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Keck Institute for Space Studies (KISS)UNSPECIFIED
Other Numbering System:
Other Numbering System NameOther Numbering System ID
AIAA Paper2018-0690
Record Number:CaltechAUTHORS:20190816-144340271
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190816-144340271
Official Citation:Stress Concentration and Material Failure During Coiling of Ultra-Thin TRAC Booms Christophe Leclerc, Antonio Pedivellano, and Sergio Pellegrino 2018 AIAA Spacecraft Structures Conference. https://doi.org/10.2514/6.2018-0690
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97963
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:22 Aug 2019 17:37
Last Modified:12 Nov 2019 21:43

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