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Failed to find a solution. Displacement field Singular matrix.
Posted 3 févr. 2022, 08:54 UTC−5 Structural Mechanics Version 6.0 0 Replies
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Hi everyone,
I am quite new to Comsol and I am trying to simulate the deformation of an electrostatic comb under the action of gravity. I meshed the device with a mapped mesh on the beam and with a coarser one on the fingers and I set one end of the bar as Fixed constraint. However I keep on getting the following error:
Failed to find a solution. Displacement field Singular matrix.
There are 25196 void equations (empty rows in matrix) for the variable comp1.u. at coordinates: (-1.2e-05,1e-05,0.00075), (-1.2e-05,8e-06,0.00075), (-1.5e-05,1e-05,0.0007464), (-9e-06,8e-06,0.00075), (-1.2e-05,7e-06,0.00075), ...
There are 25196 void equations (empty rows in matrix) for the variable comp1.v. at coordinates: (-1.2e-05,1e-05,0.00075), (-1.2e-05,8e-06,0.00075), (-1.5e-05,1e-05,0.0007464), (-9e-06,8e-06,0.00075), (-1.2e-05,7e-06,0.00075), ...
There are 25196 void equations (empty rows in matrix) for the variable comp1.w. at coordinates: (-1.2e-05,1e-05,0.00075), (-1.2e-05,8e-06,0.00075), (-1.5e-05,1e-05,0.0007464), (-9e-06,8e-06,0.00075), (-1.2e-05,7e-06,0.00075), ...
and similarly for the degrees of freedom (empty columns in matrix). In Displacement field: Returned solution is not converged. Not all parameter steps returned.
Can anybody help me?
Unfortunately I can not attach the file because it is too big...
Hello Luca Pirovano
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