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Micromechanics Modeling of Time-dependent Failure of Stowed High-strain Composite Structures

Ubamanyu, Kanthasamy and Pellegrino, Sergio (2022) Micromechanics Modeling of Time-dependent Failure of Stowed High-strain Composite Structures. In: AIAA SCITECH 2022 Forum. American Institute of Aeronautics and Astronautics , Reston, VA, Art. No. 2022-0649. ISBN 978-1-62410-631-6.

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Deployable structures made of thin-ply carbon fiber-reinforced composites are of interest due to their high stiffness to weight ratio, high packaging efficiency, and ability to deploy by the release of stored strain energy. For most applications, the largest strains are applied for the longest time during stowage, and viscoelastic polymers in these fiber-reinforced composites are prone to time-dependent deformation growth and rupture. This paper presents a study of the time-dependent deformation growth and time-dependent failure mechanisms using a micromechanics-based 3D finite element model representation of the composite. The study is focused on a repeating unit cell of a cross-ply carbon fiber laminate consisting of linear-elastic transversely isotropic fibers embedded in a linear viscoelastic matrix. A parametric study of initial fiber misalignment angle and its influence on the deformation growth and time to rupture is presented.

Item Type:Book Section
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Pellegrino, Sergio0000-0001-9373-3278
Additional Information:© 2022 by Uba K Ubamanyu and Sergio Pellegrino. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission.
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Other Numbering System NameOther Numbering System ID
AIAA Paper2022-0649
Record Number:CaltechAUTHORS:20220210-928345000
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Official Citation:Kanthasamy Ubamanyu and Sergio Pellegrino. "Micromechanics Modeling of Time-dependent Failure of Stowed High-strain Composite Structures," AIAA 2022-0649. AIAA SCITECH 2022 Forum. January 2022.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:113382
Deposited By: George Porter
Deposited On:10 Feb 2022 21:24
Last Modified:10 Feb 2022 22:09

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