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- Title
Modeling the Electrical Contact Resistance at Steel-Carbon Interfaces.
- Authors
Brimmo, Ayoola; Hassan, Mohamed
- Abstract
In the aluminum smelting industry, electrical contact resistance at the stub-carbon (steel-carbon) interface has been recurrently reported to be of magnitudes that legitimately necessitate concern. Mitigating this via finite element modeling has been the focus of a number of investigations, with the pressure- and temperature-dependent contact resistance relation frequently cited as a factor that limits the accuracy of such models. In this study, pressure- and temperature-dependent relations are derived from the most extensively cited works that have experimentally characterized the electrical contact resistance at these contacts. These relations are applied in a validated thermo-electro-mechanical finite element model used to estimate the voltage drop across a steel-carbon laboratory setup. By comparing the models' estimate of the contact electrical resistance with experimental measurements, we deduce the applicability of the different relations over a range of temperatures. The ultimate goal of this study is to apply mathematical modeling in providing pressure- and temperature-dependent relations that best describe the steel-carbon electrical contact resistance and identify the best fit relation at specific thermodynamic conditions.
- Subjects
CARBON steel; CONTACT resistance (Materials science); THERMOELECTRIC effects; THERMODYNAMICS; INTERFACES (Physical sciences); ALUMINUM smelting
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2016, Vol 68, Issue 1, p49
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-015-1665-4