Nonlinear mechanical response of supercooled melts under applied forces

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We review recent progress on a microscopic theoretical approach to describe the nonlinear response of glass-forming colloidal dispersions under strong external forcing leading to homogeneous and inhomogeneous flow. Using mode-coupling theory (MCT), constitutive equations for the rheology of viscoelastic shear-thinning fluids are obtained. These are, in suitably simplified form, employed in continuum fluid dynamics, solved by a hybrid-Lattice Boltzmann (LB) algorithm that was developed to deal with long-lasting memory effects. The combined microscopic theoretical and mesoscopic numerical approach captures a number of phenomena far from equilibrium, including the yielding of metastable states, process-dependent mechanical properties, and inhomogeneous pressure-driven channel flow.

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ISO 690CÁRDENAS, Heliana, Fabian FRAHSA, Sebastian FRITSCHI, Alexandre NICOLAS, Simon PAPENKORT, Thomas VOIGTMANN, Matthias FUCHS, 2017. Nonlinear mechanical response of supercooled melts under applied forces. In: The European Physical Journal Special Topics. 2017, 226(14), pp. 3039-3060. ISSN 1951-6355. eISSN 1951-6401. Available under: doi: 10.1140/epjst/e2017-70079-3
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@article{Cardenas2017-08-10Nonli-40610,
  year={2017},
  doi={10.1140/epjst/e2017-70079-3},
  title={Nonlinear mechanical response of supercooled melts under applied forces},
  number={14},
  volume={226},
  issn={1951-6355},
  journal={The European Physical Journal Special Topics},
  pages={3039--3060},
  author={Cárdenas, Heliana and Frahsa, Fabian and Fritschi, Sebastian and Nicolas, Alexandre and Papenkort, Simon and Voigtmann, Thomas and Fuchs, Matthias}
}
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