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A Thermoviscoelastic Approach for Modeling Shape Memory Polymers

Published online by Cambridge University Press:  31 January 2011

Thao D Nguyen
Thao D Nguyen*
Affiliation:
vicky.nguyen@jhu.edu, The Johns Hopkins University, The Department of Mechanical Engineering, 3400 N. Charles St, Latrobe 125, Baltimore, Maryland, 21218, United States, 410-516-4538
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Abstract

This paper presents a thermoviscoelastic model for shape memory polymers (SMPs). The model has been developed base on the hypothesis that structural and stress relaxation are the primary shape memory mechanisms of crosslinked, glassy SMP, and that consideration of these mechanisms is essential for predicting the time-dependence of the shape memory response. Comparisons with experiments show that the model can reproduce the rate-dependent strain-temperature and stress-strain response of a crossslinked, glassy SMP. The model also captures many important features of the temperature and time dependence of the free strain recovery and constrained stress recovery response.

Keywords

polymerviscoelasticitymemory
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1190: Symposium NN – Active Polymers , 2009 , 1190-NN01-04
Copyright
Copyright © Materials Research Society 2009

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