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Experimental and Modelling of Shape Memory Effect of Shape Memory Natural Rubber

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Abstract:

Shape memory natural rubber (SMNR) is a form of smart material that can memorise its permanent shape in response to temperature. In this article, a phenomenological constitutive model was adopted to predict the stress-strain evolution during the shape memory process of SMNR to understand the behavior of SMNR. A standard linear solid (SLS) model with Kelvin Voigt element was extended with two Mooney Rivlin models to account for the mechanical response, while a thermal strain model represented the change of length during the programming process and recovery process. An external temperature law was constructed to govern the volume fraction change between the soft active and frozen phase. The proposed constitutive model is capable of capturing the stress-strain behaviour of each shape memory step.

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Periodical:

Materials Science Forum (Volume 1113)

Pages:

49-54

DOI:

https://doi.org/10.4028/p-ZtS6ld

Citation:

Cite this paper

Online since:

February 2024

Authors:

Yu Yang Kow, Ai Bao Chai*, Jee Hou Ho

Keywords:

Modelling, Phenomenological Constitutive Model, Shape Memory Natural Rubber

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© 2024 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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