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Time-efficient geometrically non-linear finite element simulations of thin shell deployable structures

Reddy, Narravula Harshavardhan and Pellegrino, Sergio (2021) Time-efficient geometrically non-linear finite element simulations of thin shell deployable structures. In: AIAA Scitech 2021 Forum. American Institute of Aeronautics and Astronautics , Reston, VA, Art. No. 2021-1795. ISBN 9781624106095. https://resolver.caltech.edu/CaltechAUTHORS:20210112-105611267

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Abstract

Isogeometric analysis of thin shells can provide higher continuity and exact geometric description. It is shown in the existing literature that isogeometric analysis converges with fewer degrees of freedom than C⁰-continuous finite elements that use Langrange polynomial shape functions, but the speed of the solutions has not been previously assessed. In this research, the geometrically nonlinear bending of a thin shell deployable structure, a tape spring is studied, using both NURBS-based and C⁰-continuous finite elements. The complex deformation of a tape spring makes it a perfect case study to compare the computational efficiency of the mentioned techniques. The simulations are carried out in the commercial software ABAQUS and LS-DYNA, and it is found that isogeometric analysis is at least three times slower than the C⁰-continuous finite element methods.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.2514/6.2021-1795DOIArticle
ORCID:
AuthorORCID
Reddy, Narravula Harshavardhan0000-0003-3897-8162
Pellegrino, Sergio0000-0001-9373-3278
Additional Information:© 2021 by Narravula Harshavardhan Reddy and Sergio Pellegrino. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. This research was funded by the Space Solar Power Project at Caltech.
Group:GALCIT, Space Solar Power Project
Funders:
Funding AgencyGrant Number
Space Solar Power ProjectUNSPECIFIED
Other Numbering System:
Other Numbering System NameOther Numbering System ID
AIAA Paper2021-1795
Record Number:CaltechAUTHORS:20210112-105611267
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20210112-105611267
Official Citation:Narravula Harshavardhan Reddy and Sergio Pellegrino. Time-efficient geometrically non-linear finite element simulations of thin shell deployable structures. AIAA Scitech 2021 Forum. AIAA 2021-1795. January 2021; DOI: 10.2514/6.2021-1795
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107423
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:13 Jan 2021 15:19
Last Modified:13 Jan 2021 15:23

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