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Erschienen in:
2016 | OriginalPaper | Buchkapitel
A Fully Coupled Thermal-Electrical-Mechanical Transient FEA Model for a 3D Anode Assembly
verfasst von : D. R. Gunasegaram, D. Molenaar
Erschienen in: Light Metals 2013
Verlag: Springer International Publishing
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A fully coupled thermal-electrical-mechanical (TEM) transient model that simulates the rodding and cell operation phases of aluminum smelting in Hall-Héroult cells is presented and discussed. This 3D model of an anode assembly was developed using the commercial finite element analysis code Abaqus, and incorporates (i) temperature-dependent material properties as well as (ii) temperature- and pressure- dependent electrical contact conductance at the anode-thimble interface. The air gap between the anode and thimble is also taken into account through the predictions of (a) its formation during the rodding step, (b) its modification as the anode slides down under gravity on the flutes of the thimble during installation and (c) its partial closure as the components heat up and expand during cell operation. The predictions of the model are found to compare well with known plant measurements of temperatures and voltages for similar systems.