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Electrostatically actuated cantilever beam

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I am conducting electrostatic pull in voltage study on cantilever beam, I am getting this error "Failed to find a solution for the initial parameter. Maximum number of Newton iterations reached. Returned solution is not converged. Not all parameter steps returned." in stationary solver 1. I have tried reducing Mesh size but it is not working.


3 Replies Last Post 2023年10月31日 GMT+1 13:42
Jeff Hiller COMSOL Employee

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Posted: 10 months ago 2023年10月30日 GMT+1 15:25
Updated: 10 months ago 2023年10月30日 GMT+1 15:24

Hello Meet,

It's hard to say without seeing your mph file, but if I was to venture a guess, it would be that the first voltage applied is too large. Try ramping up the voltage more progressively. If that's not the issue, consider uploading your mph file.

Best,

Jeff

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Jeff Hiller
Hello Meet, It's hard to say without seeing your mph file, but if I was to venture a guess, it would be that the first voltage applied is too large. Try ramping up the voltage more progressively. If that's not the issue, consider uploading your mph file. Best, Jeff

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Posted: 10 months ago 2023年10月31日 GMT+1 10:56

I am doing pull in voltage study using stationary study using auxiliary sweep for Zset. in stationary solver i have Fully coupled linear solver as Direct, that is where I am getting the error "Failed to find a solution for the initial parameter. Maximum number of Newton iterations reached. Returned solution is not converged. Not all parameter steps returned. "

I am doing pull in voltage study using stationary study using auxiliary sweep for Zset. in stationary solver i have Fully coupled linear solver as Direct, that is where I am getting the error "Failed to find a solution for the initial parameter. Maximum number of Newton iterations reached. Returned solution is not converged. Not all parameter steps returned. "

Jeff Hiller COMSOL Employee

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Posted: 10 months ago 2023年10月31日 GMT+1 13:42
Updated: 10 months ago 2023年10月31日 GMT+1 13:42

Can you please upload your mph file?

Jeff

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Jeff Hiller
Can you please upload your mph file? Jeff

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