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Comsol 4 simple 3D simulation

Topics: 4.0, Mesh

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Mehrdad Pasha

Mehrdad Pasha

July 26, 2010 7:15pm UTC

Comsol 4 simple 3D simulation

Hi

I am trying to simulate a simple 3D mechanical structure (a 2um SiO2 deposited on 15umGaAs substrate). However after I am adding my mesh and setting all parameters when I start the simulation it bring me 2 error which I have no clue what they are. I have attached my the errors I am getting to the post

Note: I have done my simulation on in 2D and they are fine and I am sure somthing is wrong with my meshing.

Regards,
Mehrdad

Attachments:   Comsol Error.png  

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0 votes
Ivar Kjelberg

Ivar Kjelberg
Moderator

July 28, 2010 7:38am UTC in response to Mehrdad Pasha

Re: Comsol 4 simple 3D simulation

Hi

first of all for so small items ensure that your tolerances are set to accept <= 1E-7 or smaller items, that you have at least a few elements per layer.

A system matrix =0 is for me typically not fully defined material or BC (boundary conditions)

and the "mean" operator is probably not correctly defined on that surface, is it "your" user mean or an internal one ? in any case go over your operators and post processing cases and check that the correct geometrical items are defined in the select box

--
Good luck
Ivar

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