Uplift Elimination

[MohammadZaman]

Hi,Dear.

I want to eliminate uplift force, but when I have seismic forces I can't define nonlinear case.

What can I do now? I have attached robot file and screen shots.

Could you please help me?

Thank you.

[Artur.Kosakowski]

Please check:

http://forums.autodesk.com/t5/Autodesk-Robot-Structural/problem-de-convergence-analyse-de-semelle/m-...

http://forums.autodesk.com/t5/Autodesk-Robot-Structural/Uplift/m-p/3320823/

http://forums.autodesk.com/t5/Autodesk-Robot-Structural/Barre-de-treillis-traction-compression-vs-s%...

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.

[MohammadZaman]

Hello.

But I used equivalent lateral force so there isn't need to use modal analysis and modal results combination.

Seismic force in this way is constant and I defined it manually.

I think it's one of disadvantages of robot.

Is there any option to solve nonlinear calculations (not nonlinear analysis) with equivalent lateral seismic force?

Thank you.

[Artur.Kosakowski · Accepted solution]

You are correct yet due to some restrictions in Robot internal architecture this is currently not possible. We have this in mind for the next releases.

See http://forums.autodesk.com/t5/Autodesk-Robot-Structural/Equivalent-static-analysis/td-p/3632154

[Artur.Kosakowski]

Introduced in SP4 for Robot 2103. Please check for the availability of this update at the beginning of the next week.