Error related to COMSOL multiphysics?

13 March 2024 1 3K Report

Undefined value found.

- Detail: Undefined value found in the stiffness matrix.

There are 775 equations giving NaN/Inf in the matrix rows for the variable comp1.T.

at coordinates: (0,6e-06), (6.26025e-06,6e-06), (3.13013e-06,6e-06), (4.29834e-06,1.03271e-05), (5.2793e-06,8.16354e-06), ...

There are 775 equations giving NaN/Inf in the matrix rows for the variable comp1.cl.

at coordinates: (0,6e-06), (6.26025e-06,6e-06), (3.13013e-06,6e-06), (4.29834e-06,1.03271e-05), (5.2793e-06,8.16354e-06), ...

There are 775 equations giving NaN/Inf in the matrix rows for the variable comp1.phil.

at coordinates: (0,6e-06), (6.26025e-06,6e-06), (3.13013e-06,6e-06), (4.29834e-06,1.03271e-05), (5.2793e-06,8.16354e-06), ...

There are 775 equations giving NaN/Inf in the matrix rows for the variable comp1.phis.

at coordinates: (0,6e-06), (6.26025e-06,6e-06), (3.13013e-06,6e-06), (4.29834e-06,1.03271e-05), (5.2793e-06,8.16354e-06), ...

and similarly for the degrees of freedom, NaN/Inf in the matrix columns.

Hamidreza Toloueinasab

Greetings. You may have forgotten to define a material property value. I also encountered this error when setting the Poisson's ratio value equal to 0.5, which indicated the material was incompressible. Instead, try setting it to a value close to 0.5 (like 0.49).

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