D. Picard, M. Fafard
To simulate adequately the behaviour of a Hall-Heroult electrolysis cell, a finite element model must take into account the properties of each material. However, there is some lacking knowledge on the mechanical behaviour of materials, particularly the long-term visco-elastic (creep/relaxation) behaviour of cathodes. This paper proposes a three-dimensional model that is to be implemented in the finite element code FESh++. The model was developed using a three-dimensional framework based on the thermodynamics of irreversible processes, where the selection of the internal variables is grounded in a phenomenological approach. The model's parameters are represented by constant constitutive tensors, and factors such as temperature and chemical dependencies are integrated through scalar functions that modify the constant constitutive tensors. The first phase of this project aimed to establish the parameters of the three-dimensional visco-elastic model for the reference state (virgin material at ambient temperature) of three different cathode materials. This paper details the theoretical model alongside the outcomes of creep tests conducted at ambient temperature for the semi-graphitic carbon cathode.
@article{8a517f99-1218-497d-a9c0-d154c9067f8d,
title={A consistent rheological model for long term creep/relaxation behaviour of cathode material of a Hall-Heroult cell},
author={D. Picard and M. Fafard},
year={2006},
language={fr}
}TY - JOUR TI - A consistent rheological model for long term creep/relaxation behaviour of cathode material of a Hall-Heroult cell AU - D. Picard AU - M. Fafard PY - 2006 LA - fr ER -
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