Results - Von Mises stress coefficient

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Hello everyone!!

I've done a simulation where I coupled two physics (Magnetic and Solid Mechanics) and now I want to see how the coefficient of Von Mises stress is distributed in the geometry of interest, but the problem is that I don't know exactly what the variable solid.misesGp means.

I also have some doubts about where it is better to evaluate the coefficient, i.e. is it better to evaluate the Von Mises stress at Lagrange points, at Gauss points or at the vertices of the mesh?

I've seen that it is possible to measure the solid.mises variable, but what is the difference between solid.mises and solid.misesGp, which one gives more realistic information about the stress the geometry is undergoing?

How can I export these results without any smoothing or interpolation? I mean the raw data.

Thank you so much!


1 Reply Last Post 25.06.2025, 11:59 MESZ
Henrik Sönnerlind COMSOL Employee

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Posted: 10 hours ago 25.06.2025, 11:59 MESZ

You can find a description of how results are evaluated in the Result Presentation section in the Structural Mechanics Module User's Guide:

https://doc.comsol.com/6.3/docserver/#!/com.comsol.help.sme/sme_ug_modeling.05.212.html

You can also find details in

https://www.comsol.com/blogs/how-to-evaluate-stresses-in-comsol-multiphysics

If there is a significant difference between the types of evaluation, it typically indicates that there is some problem in the model, usually a too coarse mesh.

The closest to 'raw' data that you can get is if you export results at Gauss points. And then you should use solid.mises since it is a plain evaluation without smoothing the field.

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Henrik Sönnerlind
COMSOL
You can find a description of how results are evaluated in the *Result Presentation* section in the Structural Mechanics Module User's Guide: You can also find details in If there is a significant difference between the types of evaluation, it typically indicates that there is some problem in the model, usually a too coarse mesh. The closest to 'raw' data that you can get is if you export results at Gauss points. And then you should use *solid.mises* since it is a plain evaluation without smoothing the field.

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