Journal
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
Volume 69-70, Issue -, Pages 34-44Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijsolstr.2015.06.011
Keywords
Magneto-sensitive polymers; Polymer curing; Shrinkage; Homogenization; Magneto-mechanical coupled problem; Mori-Tanaka model
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Funding
- ERC advanced grant within the project MOCOPOLY
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We propose a magneto-mechanically coupled multi-scale model for simulating the curing process of polymers. In the case of magneto-sensitive polymers, micron-size ferromagnetic particles are mixed with a liquid polymeric matrix in the uncured stage. The polymer curing process is a complex process that transforms a fluid to a solid with time. To transfer the constituent parameter information from the micro-scale to the macro-scale for a composite magneto-mechanically coupled polymeric material, an extended Mori-Tanaka semi-analytic homogenization procedure is utilized. The stiffness gaining phenomenon as in the case of a curing process is realized by time-dependent material parameters appearing within the composite piezomagnetic material tensors. Moreover, to compute the volume reduction during curing, a magnetic induction dependent shrinkage model is proposed. Several numerical examples show that the model proposed herein can capture major observable phenomena in the curing process of polymers under magneto-mechanically coupled infinitesimal deformations. (C) 2015 Elsevier Ltd. All rights reserved.
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