No Convergence of non-linear problem

[Anonymous]

Hello, 

I have this 2D model which I doing an analysis for.

When running my analysis (combination 1) I am getting a warning/error "no convergence of nonlinear problem" . I am not aware of why this is so I do not really know what is going on. 

Your help will be appreciated

Your help will be appreciated. 

[Simau]

@Anonymous 

No model attached.

Zip it before upload

[Anonymous]

thankyou! here is the attachment.

[Krzysztof_Wasik]

Hi @Anonymous 

Activate large displacements for all load cases.

[Anonymous]

Thank you!

When trying to run the live loads on the short span I am getting the same error, I have imputed the P-Delta and Large Displacements as well. Do you know what the issue could be? 

[Anonymous]

Also when I try and run the analyse on the Live Load Short span, the dead loads remains there. I have tried deleting it and adding it again but the dead load consistently stays every time I change to the live load. Why is this happening? 

[Krzysztof_Wasik]

Hi @Anonymous 

First lad case is always assembly case for cable structure. All other loads are applied on assembly case (generating initial prestressed cable structure stage (assembly stage) . You cannot remove load case 1 when next cases are calculated.

[Krzysztof_Wasik]

Hi @Anonymous 

I think you should define some initial forces in cables. For instance when I will define cables relative elongation dL=-0.003 model converges