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Large-Strain Viscoelastic Constitutive Models for Thin Polyethylene Films

Li, Jun and Kwok, Kawai and Pellegrino, S. (2015) Large-Strain Viscoelastic Constitutive Models for Thin Polyethylene Films. In: AIAA SciTech : 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. American Institute of Aeronautics and Astronautics , Reston, VA, Art. No. 2015-0194. ISBN 9781624103421. https://resolver.caltech.edu/CaltechAUTHORS:20190816-144341701

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Abstract

This paper presents a constitutive model capable of predicting the thermoviscoelastic behavior of the balloon thin film StratoFilm subject to large strains up to yielding. The model is based on the free volume theory of nonlinear thermoviscoelasticity and extended to orthotropic membranes. An ingredient of the present approach is that the experimentally inaccessible out-of-plane material properties are determined by fitting the model predictions to the measured non-linear behavior of the film. Creep tests, uniaxial tension tests, and biaxial bubble tests are used to determine the material parameters. The model has been validated experimentally, against data obtained from uniaxial tension tests and biaxial cylindrical tests at a wide range of temperatures and strain rates spanning two orders of magnitude (0.01%/s ~ 1%/s).


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.2514/6.2015-0194DOIArticle
ORCID:
AuthorORCID
Kwok, Kawai0000-0001-6876-4267
Pellegrino, S.0000-0001-9373-3278
Additional Information:© 2015 American Institute of Aeronautics and Astronautics.
Group:GALCIT
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AIAA Paper2015-0194
Record Number:CaltechAUTHORS:20190816-144341701
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190816-144341701
Official Citation:Large-Strain Viscoelastic Constitutive Models for Thin Polyethylene Films Jun Li, Kawai Kwok, and Sergio Pellegrino 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. https://doi.org/10.2514/6.2015-0194
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97979
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:21 Aug 2019 21:30
Last Modified:03 Oct 2019 21:36

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