Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Problems with MEMS Module of FEMLAB

Status
Not open for further replies.

fasaghandis

Member level 5
Joined
Jul 10, 2002
Messages
81
Helped
1
Reputation
2
Reaction score
0
Trophy points
1,286
Location
tehran
Activity points
638
warning: inverted mesh element near coordinates

Dear Sir
Recently I have started to model the MEMS by the COMSOL MEMS MODULE. As a beginner I started by the modeling cantilever beam as described in COMSOL MEMS Module Model Library, PP.8-12. However COMSOL show me the following Error and Warnings.

================================================================================
Progress - Solve Problem: Sat Jul 21 13:35:51 PDT 2007
================================================================================
fem.sol=femnlin(fem, ...
'init',init, ...
'solcomp',{'lm3','u','y','x','V','lm4','v'}, ...
'outcomp',{'lm3','u','y','lm4','V','x','v'}, ...
'pname','Vin', ...
'plist',[1:6, 6.1:.1:6.3]);

--------------------------------------------------------------------------------
Number of degrees of freedom solved for: 13001

Parameter Vin = 1
Iter ErrEst Damping Stepsize #Res #Jac #Sol
Warning: Inverted mesh element near coordinates (0.000298653,
3.28079e-006)
1 3.2e+017 0.5000000 1.4 3 1 2
Warning: Inverted mesh element near coordinates (0.0003, 3.99772e-006)
2 9.4 0.0500000 9 4 2 4
Warning: Inverted mesh element near coordinates (0.0003, 3.99772e-006)
Warning: Inverted mesh element near coordinates (0.0003, 3.99309e-006)
Warning: Inverted mesh element near coordinates (0.0003, 3.99725e-006)
Warning: Inverted mesh element near coordinates (0.0003, 3.99762e-006)

Error:
Failed to find a solution for the initial parameter:
No convergence, even when using the minimum damping factor.
Returned solution has not converged.

What is my mistake?
What I must do?
Attachment fine the COMSOL model file. please change the file extension from .doc to .mph
Thanks in advance for your assistance
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top