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New to comsol
Posted 17.08.2021, 19:13 GMT-4 Electromagnetics, Semiconductor Devices, Microfluidics 3 Replies
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Hi, I got this error and the more information option on the error took me to a page that didn't have more information. I can see there is more to this error than 'undefined variable' but I don't actualy know what it is refferenceing. " Undefined variable. - Variable: comp1.solid.mises - Geometry: geom1 - Boundaries: 289-301 Failed to evaluate expression. - Expression: comp1.solid.mises - Plot: Surface 1 "
thank you for any consideration.
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Hi Jacob,
All I can tell without seeing your .mph file is that your model is trying to evaluate the von Mises stress on boundaries 289 through 301, on which it is not defined properly. But you probably knew that already :). Please post your .mph file for -hopefully- more useful comments.
Best,
Jeff
-------------------Jeff Hiller
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Absolutly right Jeff, a frustraited oversight on my part.
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Hi Jacob,
The reason for the error is that your Solid Mechanics physics interface isn't assigned to any domain. If you add Domain 1 (which I assume is the solid) to it, then the plot works. I'm not sure if that's the correct or way to set up the simulation that you had in mind, but it does at least fix the error.
Best,
Magnus Ringh, COMSOL