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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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Repelling of two magnets on top of two rods

Posted 2014年7月23日 GMT-4 16:38 Low-Frequency Electromagnetics, Structural Mechanics Version 4.4 2 Replies

Edvin Golestanyan
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Dear All,

I have attached a model. Two magnets are on top of two rods and the magnets lets assume they have opposite polarities so they have to repel each other and the rods should deform.

Please help me how can I simulate it, to see the deformation of the rods.

Thank you.
2 Replies Last Post 2014年7月25日 GMT-4 12:20
Sergei Yushanov Certified Consultant
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Posted: 1 decade ago 2014年7月24日 GMT-4 08:41
Edvin,

Attached is your model with deformed rods.
I made several changes:

- Added second “Force Calculation” node, so each force node calculates stress tensor for separate rod (you can’t use single “Force Calculation” node for both rods)
- Added two “Boundary Load” nodes in Solid Mechanics interface to apply Maxwell stress tensor load

Note, this model is valid for small displacements only. If you want to consider large displacements, then Moving Mesh interface (ale) should be added.

Regards,
Sergei
Edvin, Attached is your model with deformed rods. I made several changes: - Added second “Force Calculation” node, so each force node calculates stress tensor for separate rod (you can’t use single “Force Calculation” node for both rods) - Added two “Boundary Load” nodes in Solid Mechanics interface to apply Maxwell stress tensor load Note, this model is valid for small displacements only. If you want to consider large displacements, then Moving Mesh interface (ale) should be added. Regards, Sergei
Edvin Golestanyan
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Posted: 1 decade ago 2014年7月25日 GMT-4 12:20
Sergei,

Thank you very much, you helped me a lot.

Regards,

Edvin
Sergei, Thank you very much, you helped me a lot. Regards, Edvin

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