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Guidance Needed On How to Correctly Add Piezoelectricity?
Posted 16.02.2025, 23:54 MEZ Acoustics & Vibrations, MEMS & Piezoelectric Devices, Physics Interfaces Version 6.2 1 Reply
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Hello, I need help adding piezoelectricity to a MEMS simulation I made. I have the Solid Mechanics and the Electrostatics Physics options added, but when I go to add the Multiphysics it doesn't recognize the parts of the geometry with the electrostatics physics enabled. Essentially, everything is deselected and I cannot add anything to the piezoelectricity multiphysics tab.
I've included a few photos of what I currently have set-up (current should run through the proof mass and the thin wire on top of the springs). I cannot seem to include my file because it's too big and I don't know how to compress it to 5 MB. I'm using the license my university has and it's version 6.2 of COMSOL.
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You need to add a Charge Conservation Piezoelectric node under Electrostatics and then select the piezoelectric material (only). Then verify that the piezoelectric material is selected under Multiphysics (I think it's automatic).