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Electrostatic Actuation of Cantilever beam

Posted 2014年3月4日 GMT-5 09:13 MEMS & Nanotechnology, MEMS & Piezoelectric Devices Version 4.3a 1 Reply

Shahid Saghir
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I,m trying to do the tutorial electrostatic actuation of cantilever beam, although i have followed exactly all the instructions but I receive the following error message. (I also checked all the physics setting and every thing against the already built model in the models/sensors folder)

here is the error message

Failed to find a solution for the initial parameter.
Segregated group 3

Singular matrix.

There are 400 void equations (empty rows in matrix) for the variable mod1.V.
at coordinates: (0,0,1e-006), (0,9.68925e-007,1e-006), (0,1.93785e-006,1e-006), (0,2.95474e-006,1e-006), (0,3.97164e-006,1e-006), ...
and similarly for the degrees of freedom (empty columns in matrix).
Returned solution is not converged.
1 Reply Last Post 2014年7月16日 GMT-4 01:47
COMSOL Moderator

Hello Shahid Saghir

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Sumathi Ayyalusamy
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Posted: 1 decade ago 2014年7月16日 GMT-4 01:47
Hai just check with the parameters under global definitions..
Hai just check with the parameters under global definitions..

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