Hossain, M., Saxena, P. and Steinmann, P. (2015) Modelling the curing process in magneto-sensitive polymers: rate-dependence and shrinkage. International Journal of Non-Linear Mechanics, 74, pp. 108-121. (doi: 10.1016/j.ijnonlinmec.2015.04.008)
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Abstract
This paper deals with a phenomenologically motivated magneto-viscoelastic coupled finite strain framework for simulating the curing process of polymers under the application of a coupled magneto-mechanical load. Magneto-sensitive polymers are prepared by mixing micron-sized ferromagnetic particles in uncured polymers. Application of a magnetic field during the curing process causes the particles to align and form chain-like structures lending an overall anisotropy to the material. The polymer curing is a viscoelastic complex process where a transformation from fluid to solid occurs in the course of time. During curing, volume shrinkage also occurs due to the packing of polymer chains by chemical reactions. Such reactions impart a continuous change of magneto-mechanical properties that can be modelled by an appropriate constitutive relation where the temporal evolution of material parameters is considered. To model the shrinkage during curing, a magnetic-induction-dependent approach is proposed which is based on a multiplicative decomposition of the deformation gradient into a mechanical and a magnetic-induction-dependent volume shrinkage part. The proposed model obeys the relevant laws of thermodynamics. Numerical examples, based on a generalised Mooney–Rivlin energy function, are presented to demonstrate the model capacity in the case of a magneto-viscoelastically coupled load.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Saxena, Dr Prashant and Steinmann, Professor Paul |
| Authors: | Hossain, M., Saxena, P., and Steinmann, P. |
| Subjects: | Q Science > QA Mathematics T Technology > TA Engineering (General). Civil engineering (General) |
| College/School: | College of Science and Engineering > School of Engineering > Infrastructure and Environment |
| Journal Name: | International Journal of Non-Linear Mechanics |
| Publisher: | Elsevier |
| ISSN: | 0020-7462 |
| ISSN (Online): | 1878-5638 |
| Published Online: | 22 April 2015 |
| Copyright Holders: | Copyright © 2015 Elsevier |
| First Published: | First published in International Journal of Non-Linear Mechanics 74:108-121 |
| Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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