Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
MEMS RESONATOR 3D: Failed to find a solution. In segregated group 3: Divergence of the linear iterations. There was an error message from the linear solver. Very ill-conditioned preconditioner. The relative residual is more than 1000 times larger than the
Posted 2014年1月31日 GMT-5 05:47 MEMS & Nanotechnology, RF & Microwave Engineering, MEMS & Piezoelectric Devices, Geometry, Mesh, Modeling Tools & Definitions, Parameters, Variables, & Functions, Studies & Solvers Version 4.3b 0 Replies
Please login with a confirmed email address before reporting spam
I am trying to run the stationary model for a MEMS disk connected to a bar in order to obtain the initial conditions (pre-stress, displacement) to include in the modal and harmonics analysis.
I have obtain this error:
Failed to find a solution.
In segregated group 3:
Divergence of the linear iterations.
There was an error message from the linear solver.
Very ill-conditioned preconditioner.
The relative residual is more than 1000 times larger than the relative tolerance.
Returned solution is not converged.
I have tried to re-check the BCs, refine the mesh and to change relative residual and tolerance, without success.
I am including the model for further information.
Dos anybody guess what is happening?
Thanks in advance for your comments.
Best, Maria.
Attachments:
Hello Mariazel Maqueda
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.