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"Contact Resistance" feature missing in magnetic & electric fields interface

Posted 6 apr 2023, 15:06 GMT-4 Low-Frequency Electromagnetics, Modeling Tools & Definitions, Physics Interfaces Version 6.1 2 Replies

Brian Appleton
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Hi,

I need to define a contact resistance at the interface between two conductors. I am using the magnetic and electric fields interface (MEF), which is the only applicable interface for my model.

The "Contact Impedance" feature (described in the documentation under the Electric Currents interface) seems to be not supported for the MEF physics interface. This feels like something that should be a feature in MEF, but is not.

Do I have any alternatives? Is there a way I can implement a contact resistance in the magnetic and electric fields interface?

Missing in both COMSOL v6.0 & 6.1

Thanks, Brian

2 Replies Last Post 7 apr 2023, 09:22 GMT-4
Edgar J. Kaiser Certified Consultant
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Posted: 2 years ago 6 apr 2023, 15:18 GMT-4

Hi Brian,

the transition BC may be what you need.

Cheers Edgar

-------------------
Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
Hi Brian, the transition BC may be what you need. Cheers Edgar
Brian Appleton
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Posted: 2 years ago 7 apr 2023, 09:22 GMT-4
Updated: 2 years ago 7 apr 2023, 09:23 GMT-4

Solution: the "Contact Impedance" feature is indeed available in the MEF interface, but it is only available under the Magnetic Continuity condition as a subnode: https://doc.comsol.com/6.1/docserver/#!/com.comsol.help.acdc/acdc_ug_magnetic_fields.08.094.html

Solution: the "Contact Impedance" feature is indeed available in the MEF interface, but it is only available under the Magnetic Continuity condition as a subnode: [https://doc.comsol.com/6.1/docserver/#!/com.comsol.help.acdc/acdc_ug_magnetic_fields.08.094.html](https://doc.comsol.com/6.1/docserver/#!/com.comsol.help.acdc/acdc_ug_magnetic_fields.08.094.html)

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