Learning Forum

[calvinmooney03]

Hi everyone, I am trying to model a transmission tower and when i go to solve for my results i get the following errors:

"A solver pivot warning or error has been detected in the ROTZ degree of freedom of node 129008 located in SYS-2\Beam (Extracted Profile1). This is usually a result of an ill conditioned matrix possibly due to unreasonable material properties, an under constrained model, or contact related issues.  Check results carefully. You may select the offending object and/or geometry via RMB on this warning in the Messages window."

 

"Solver pivot warnings or errors have been encountered during the solution.  This is usually a result of an ill conditioned matrix possibly due to unreasonable material properties, an under constrained model, or contact related issues.  Check results carefully."

 

What might i be able to do to fix this, I have tried sharing the topologoy of the structure in spaceclaim but that makes my model disappear completely in mechancial. I have also tried changing "beam cross section (for solver)" from pre-integrated to mesh. And changed the "Beam section results" to Yes.

[Ashish Khemka]

Hi,

Try performing a modal analysis to see the deformation of the model. Unconstrained DOF will give you zero frequency and will help to identify unconstrained parts.

 

Regards,

Ashish Khemka

[calvinmooney03]

Hi, I am now just getting the error 

"Solver pivot warnings or errors have been encountered during the solution.  This is usually a result of an ill conditioned matrix possibly due to unreasonable material properties, an under constrained model, or contact related issues.  Check results carefully."

I have looked at other answers on the forum and cannot seem to get a solution, what can i do to fix this?

I attached a download for an archive of the project in a reply below this if you want to have a look.

Thanks.

 

[joseronaldo.15]

Hi, you can share the proyect?

[calvinmooney03]

https://atlantictu-my.sharepoint.com/:u:/r/personal/g00391348_atu_ie/Documents/Year%204/Major%20Project/Third%20Transmission%20Tower%20Design.wbpz?csf=1&web=1&e=EUZp6c

This is the link to download the file; let me know if you can access it. The project I’m working on is in static structural C. Thanks.

 

 

[joseronaldo.15]

I can not download