Non-linear analysis (P-Delta) with initial loading

[Anonymous]

Hi

Is it possible in some way to run a non-linear analysis with initial loading? I.e. I want to use permanent loads as the first step in a non-linear analysis and then continue with incremental loading of variable loads.

[mustafahesenow]

Can you please explain more about what you need to understand it better.

[Artur.Kosakowski]

Hi @Anonymous

Try to define permanent loads in the 1st load case and then apply it as the staring ones to the live one. This is similar to running a cable model with the assembly load case.

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.

[Anonymous]

So what do I put in the Case list field, permanent load case number or load combination number? I have tried both.

I have permanent loads in load case 1 and then I define a non-linear load combination (P-Delta) which includes permanent + variable loads. So when I check the reaction forces for the non-linear combination I expect/want to see reaction forces equal to the permanent load in the first increment (out of ten in my case). What I observe now in the first increment is reaction forces equal to 10 % of the sum of permanent and variable loads. 

I hope you understand my descripiton and what I want to achieve.