Hey,
You guys have been very helpful in the past, and I've tried to solve this on my own but I keep hitting an error and can't figure out why. I'm hoping you can offer some advice.
I'm trying to find the spring constant of a microcantilever that is 300um long by 45um wide and .75um thick. Right now I'm not doing anything fancy--just the cantilever and a block it's attached to. I'm applying a 1uN force to the end to find the displacement using a stationary solver.
I've applied boundary conditions, set initial values, and meshed everything. And each time when I click "solve" it works for about 30 seconds to a minute and then errors out saying "Error: Failed to find a solution" and when I click on the actual error it reads:
[Very ill-conditioned preconditioner.
The relative residual is more than 1000 times larger than the relative tolerance.
Returned solution has not converged.]
While I understand that it needs to converge and all that, I can't figure out why it's struggling or where the error is coming in. This is a very basic model that I'm planning to build up into a more realistic one for our research, but I'm not able to get a solution.
I know Comsol can easily solve this; what am I missing?
Thank you in advance for any help; you guys are very much appreciated.
You guys have been very helpful in the past, and I've tried to solve this on my own but I keep hitting an error and can't figure out why. I'm hoping you can offer some advice.
I'm trying to find the spring constant of a microcantilever that is 300um long by 45um wide and .75um thick. Right now I'm not doing anything fancy--just the cantilever and a block it's attached to. I'm applying a 1uN force to the end to find the displacement using a stationary solver.
I've applied boundary conditions, set initial values, and meshed everything. And each time when I click "solve" it works for about 30 seconds to a minute and then errors out saying "Error: Failed to find a solution" and when I click on the actual error it reads:
[Very ill-conditioned preconditioner.
The relative residual is more than 1000 times larger than the relative tolerance.
Returned solution has not converged.]
While I understand that it needs to converge and all that, I can't figure out why it's struggling or where the error is coming in. This is a very basic model that I'm planning to build up into a more realistic one for our research, but I'm not able to get a solution.
I know Comsol can easily solve this; what am I missing?
Thank you in advance for any help; you guys are very much appreciated.
