In addition, i am running the Linear pert-frequency step directly after initial base step.
I found this feature which I could not get to work by editing the INP file...
34-2.1-10 *surface interaction, tracking thickness=value
It kept aborting saying there is no step defined.
Thank you,
Doug
I am using Abaqus/CAE v6.11
Using linear perturbation-frequency step to determine natural frequencies of a flexible Wing. Constant cross section ribs stacked to form a very flexible wing. A single 'spar' rectangular rod is inserted thru these airfoil sections. Picture shishkabob or cantilever...