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Can't seem to get a basic MEMS to work
Posted 7 lug 2024, 13:35 GMT-4 MEMS & Piezoelectric Devices 1 Reply
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Pretty new to COMSOL, just trying to get a basic simulation of pressure waves of a MEMS piezoelectric device. Not sure why I'm getting this error as I think I've included all the parameters I need: Feature: Stationary Solver 1 (sol1/s1) Undefined material property 'cE' required by Piezoelectric Material 1. Attached is the file. Any help would be appreciated
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Hi Oliver,
The Piezoelectric Material node under Solid Mechanics needs values for the elasticity and coupling matrices when set to a stress-charge form. Those values are set to be taken from the added materials, but in the Material nodes in the attached model, values for those matrices are not provided. You need to add them there or directly in the Piezoelectric Material node, if you change the setting from From material to User defined.
I suggest that you study one of the example models of piezoelectric devices that are available in the Application Library folders for the MEMS Module and the Structural Mechanics Module, as well as online in the COMSOL Application Gallery: https://www.comsol.com/models.
Best regards,
Magnus