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2D FSI Failed to evaluate reaction forces
Posted 21 mag 2019, 05:45 GMT-4 MEMS & Piezoelectric Devices, Microfluidics Version 5.3 0 Replies
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Hi I'm performing a microfluidic FSI: 4us analysis
Error: Failed to evaluate reaction forces
COMSOL version 5.3
(See attached geometry and input)
This is what comes out from my time dependent analysis of a layered vibrating membrane, with prescribed displacement of 0.5um, over a fluid chamber, following a rectangle wave. I'm using Generalized alpha solver, 0.001 relative tollerace +0.1 tolerance factor, fully coupled + Automatic Newton, strict time stepping:
range(0,1e-7,7e-7)range(7.4e-7,1e-9,3.4e-6)range(3.5e-6,1e-8,4e-6)
The error comes out after the first ramp, around 1.7 us ( i tried a lot of configurations, at most I reached 1.9 us).
Any suggestions? Thanks in advance.
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Hello Jacopo Musumeci
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