A Thermo-Mechanical Constitutive Model of Glassy Shape Memory Polymers

Jian Li; Shi Yu Dong; Qian Hua Kan; Guo Zheng Kang; Wen Yi Yan

doi:10.4028/www.scientific.net/AMM.853.96

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 853A Thermo-Mechanical Constitutive Model of Glassy...

A Thermo-Mechanical Constitutive Model of Glassy Shape Memory Polymers

Abstract:

Glassy shape memory polymer materials are applied successfully in biomedical fields due to their large recovery deformation, excellent biocompatibility and unique biodegradability. To predict the thermo-mechanical behavior of glassy shape memory polymers in biomedical devices accurately, a reasonably three-dimensional thermo-mechanical constitutive model must be established firstly. A one-dimensional linear-elastic constitutive model proposed by Tobushi et. al. (1997) was extended to capture the loading level dependent degradation of shape memory effect by introducing new nonlinear evolution equations with threshold values. Comparisons between experiments and simulations were carried to validate the extended model. Simulation results agree with experiments well, especially for the high loading levels.

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Periodical:

Applied Mechanics and Materials (Volume 853)

Pages:

96-100

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.853.96

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Online since:

September 2016

Authors:

Jian Li, Shi Yu Dong, Qian Hua Kan*, Guo Zheng Kang, Wen Yi Yan

Keywords:

Nonlinear, Shape Memory Polymers, Threshold Value, Viscoelastic

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* - Corresponding Author

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