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Results - Von Mises stress coefficient
Posted 2025年6月19日 GMT+8 18:02 Electromagnetics, Results & Visualization, Structural Mechanics Version 6.3 1 Reply
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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!
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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.
-------------------Henrik Sönnerlind
COMSOL