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Multiscale modelling of layered-silicate/PET nanocomposites during solid-state processing
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Figiel, Lukasz, Dunne, Fionn P.E. and Buckley, C. Paul (2009) Multiscale modelling of layered-silicate/PET nanocomposites during solid-state processing. In: IUTAM Symposium on Modelling Nanomaterials and Nanosystems :Proceedings of the IUTAM Symposium held in Aalborg, Denmark, 19–22 May 2008. Springer, pp. 19-26.
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Official URL: http://dx.doi.org/10.1007/978-1-4020-9557-3_3
Abstract
This work aims to develop a continuum, multi-scale, physically-based model of the forming process for layered-silicate nanocomposites based on poly(ethylene terephthalate) (PET) matrices, as might be used for packaging. This challenge is tackled using: (1) a physically-based model of PET implemented into the FEM-based code ABAQUS, (2) RVEs with prescribed morphologies reflecting TEM images, and (3) nonlinear computational homogenisation. As a result, 2-D two-scale FEM-based simulations under biaxial deformations (constant width) enabled the extraction of macroscopic stress-strain curves at different silicate contents and processing temperatures. In particular, interesting features in terms of morphology changes and its impact on the macroscopic stress response were captured: (a) morphology change by particle re-orientation and pronounced bending, (b) macroscopic strain hardening due to platelet re-orientation and local strain stiffening, (c) facilitated platelet alignment, and platelet delamination in tactoids through sheardominated deformations and increasing temperature.
Item Type: | Book Item | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Journal or Publication Title: | IUTAM Symposium on Modelling Nanomaterials and Nanosystems | ||||
Publisher: | Springer | ||||
ISSN: | 1875-3507 | ||||
Book Title: | IUTAM Symposium on Modelling Nanomaterials and Nanosystems :Proceedings of the IUTAM Symposium held in Aalborg, Denmark, 19–22 May 2008 | ||||
Official Date: | 2009 | ||||
Dates: |
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Volume: | Volume 13 | ||||
Page Range: | pp. 19-26 | ||||
DOI: | 10.1007/978-1-4020-9557-3_3 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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