compine static with frequency analysis thanks for your attention

[fanis_greece]

hello there i am a student engineer from greece an i am working on an analysis for a wing ,my question is how can i apply an internal force on a part on my assemply and after that with that force applied to do a frequency analysis. I tried to create to step where i the step 1 i apply the force an in the step 2 i apply the frequency analysis but it seems that there is no difference if there is the force or not
thank you all ,with respect

 

[FEA way]

Would be nice to know which software you are using.

 

[fanis_greece]

sorry for that the program is abaqus/caee 6.14

 

[FEA way]

It should work if you enable Nlgeom (geometric nonlinearity) in the first step.