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THERMO-ELECTRO-MECHANICAL INVESTIGATION OF VOLTAGE DROP IN ANODE ASSEMBLY USING FINITE ELEMENT METHOD

Jeddi, E.; Marceau, D.; Kiss, L. I.; St-Georges, Lyne; Laroche, D.; Hacini, L.;

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In today’s context, aluminum producers strive to improve their position regarding energy consumption and production costs. To do so, mathematical modeling offers a good way to study the behavior of the cell during its life. In this paper, a fully-coupled, thermoelectro- mechanical (TEM) model of a whole hexapod anode assembly is presented. The parametric finite element (FE) model was developed using APDL™ (ANSYS® Parametric Design Language) and was solved with a FESh++ TEM application to simulate the thermal and electrical effects of the reduction process on the anode assembly. A half block submodel of the full anode assembly model was used for the analysis in order to achieve a better understanding of the system and to evaluate the hypothesis of lowering the anodic voltage drop in the anode assembly through a simple change in the stub diameter. After calibration with the experimental results, sensitivity analysis (SA) was carried out to investigate the impact of changes of some critical parameters on the initial air gap at the cast iron to carbon interface and consequently on the total voltage drop in the system. These critical parameters were: effective stub temperature at cast iron solidification, stub diameter and coefficient of thermal expansion (CTE) which showed they have marginal or remarkable impact on the total voltage drop depending on the operating temperature.

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Palavras-chave: Aluminum Production, Anode Assembly, Voltage Drop, Electrical Contact Resistance, Numerical Modeling and Simulation, Finite Elements Method.,

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DOI: 10.5151/meceng-wccm2012-18265

Referências bibliográficas
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Como citar:

Jeddi, E.; Marceau, D.; Kiss, L. I.; St-Georges, Lyne; Laroche, D.; Hacini, L.; "THERMO-ELECTRO-MECHANICAL INVESTIGATION OF VOLTAGE DROP IN ANODE ASSEMBLY USING FINITE ELEMENT METHOD", p. 1097-1115 . In: In Proceedings of the 10th World Congress on Computational Mechanics [= Blucher Mechanical Engineering Proceedings, v. 1, n. 1]. São Paulo: Blucher, 2014.
ISSN 2358-0828, DOI 10.5151/meceng-wccm2012-18265

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