Multi-scale modeling of polymer nanocomposites
(2009) Nanotechnology 2009: Life Sciences, Medicine, Diagnostics, Bio Materials and Composites 2009. NSTI Nanotechnology Conference and Expo — Location: Houston, TX, USA (3.May.2009)
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- Abstract
- Mean-field (MF) homogenization describes composite behavior based on average stress/strain tensors on phase and composite level and combines analytical formulae with numerical simulation. MF can handle coated inclusions, which is important for nanocomposite modeling because the coating properties can emulate the force between nanoparticles. Also for matrix-particle interaction, the coating can represent a real, new phase, e.g. matrix material with density variations. Two-level homogenization is applied to densely packed clusters of particles and voids. To verify MF predictions, realistic FE models are constructed representing microstructure geometry, including cluster size distribution from image analysis. The MF predicted stiffness, obtained in seconds, are less than 5% off the FE predicted stiffness, obtained in hours. In FEA, the coating can represent electron tunneling and percolation, increasing composite conductivity with many orders of magnitude. Results are compared with experimental data from industrial partner.
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Adam, L., Delaere, K., Kaszacs, M., Ge rard, J.-S., Assaker, R., & Doghri, I. (2009). Multi-scale modeling of polymer nanocomposites. In Laudon, M.; Romanowicz, B.; (ed.), Nanotechnology 2009: Life Sciences, Medicine, Diagnostics, Bio Materials and Composites 2009. NSTI Nanotechnology Conference and Expo (p. p. 515-518). Nano science and technology institute. https://hdl.handle.net/2078.5/221146