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Probing the Stability of Ladder-Type Coilable Space Structures

Royer, Fabien and Pellegrino, Sergio (2022) Probing the Stability of Ladder-Type Coilable Space Structures. AIAA Journal, 60 (4). pp. 2000-2012. ISSN 0001-1452. doi:10.2514/1.j060820. https://resolver.caltech.edu/CaltechAUTHORS:20220112-107090239

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Abstract

This paper analyzes the buckling and postbuckling behavior of ultralight ladder-type coilable structures, called strips, composed of thin-shell longerons connected by thin rods. Based on recent research on the stability of cylindrical and spherical shells, the stability of strip structures loaded by normal pressure is studied by applying controlled perturbations through localized probing. A plot of these disturbances for increasing pressure is the stability landscape for the structure, which gives insight into the structure’s buckling, postbuckling, and sensitivity to disturbances. The probing technique is generalized to higher-order bifurcations along the postbuckling path, and low-energy escape paths into buckling that cannot be predicted by a classical eigenvalue formulation are identified. It is shown that the stability landscape for a pressure-loaded strip is similar to the landscape for classical shells, such as the axially loaded cylinder and the pressure-loaded sphere. Similarly to classical shells, the stability landscape for the strip shows that an early transition into buckling can be triggered by small disturbances; however, while classical shell structures buckle catastrophically, strip structures feature a large stable postbuckling range.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.2514/1.J060820DOIArticle
ORCID:
AuthorORCID
Royer, Fabien0000-0003-2452-2893
Pellegrino, Sergio0000-0001-9373-3278
Additional Information:© 2021 The Author(s). Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. Presented as Paper 2020-1437 at the AIAA SciTech 2020, Orlando, FL, January 6–10, 2020; received 17 April 2021; revision received 9 September 2021; accepted for publication 8 November 2021; published online 3 January 2022. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. The authors warmly thank John W. Hutchinson for help in preparing this paper. Financial support from the Space Solar Power Project at Caltech is gratefully acknowledged.
Group:GALCIT, Space Solar Power Project
Funders:
Funding AgencyGrant Number
Space Solar Power ProjectUNSPECIFIED
Issue or Number:4
DOI:10.2514/1.j060820
Record Number:CaltechAUTHORS:20220112-107090239
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20220112-107090239
Official Citation:Probing the Stability of Ladder-Type Coilable Space Structures. Fabien Royer and Sergio Pellegrino. AIAA Journal 2022 60:4, 2000-2012; DOI: 10.2514/1.j060820
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:112841
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:12 Jan 2022 11:40
Last Modified:16 Aug 2022 21:51

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