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Compute Comsol
Posted 2021年7月19日 GMT-4 05:35 2 Replies
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Hello, Can you help me? Undefined value found. - Detail: Undefined value found in the stiffness matrix. There are 15 equations giving NaN/Inf in the matrix rows for the variable comp1.solid.ece. at coordinates: (14.899,-1263.63), (19.3497,-1272.16), (6.84974,-1272.16), (63.2716,-1261.13), (68.9429,-1271.53), ...
There are 15 degrees of freedom giving NaN/Inf in the matrix columns for the variable comp1.solid.ece. at coordinates: (14.899,-1263.63), (19.3497,-1272.16), (6.84974,-1272.16), (63.2716,-1261.13), (68.9429,-1271.53), ...
Sincerely, Malgorzata
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I don't think anyone can tell you how to fix your problem based only on that information. I suggest that you: (1) Explain what kind of problem you are trying to solve, and (2) how you are trying to solve it, and (3) post your model (the .mph file) to the forum.
-------------------Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
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I agree with you Robert that there is not enough information. But I will make an attempt anyway:
My guess is that the creep strain rate approaches infinity in a solid mechanics problem. Bad material data, or too large time steps maybe.
-------------------Henrik Sönnerlind
COMSOL