Good afternoon,
I am trying to perform the dynamic simulation of a structure which includes cables in tension and I want to determine the eigenfrequencies and eigenmodes.
This is what I did:
- Spring (CELAS - PELAS), it works both for linear static and normal modes, but it sets the same stiffness to tension and compression and this is unreal for me
- Gap (CGAP - PGAP), it works only for non-linear static while it induces a constant stiffness in all the other simulations
- Bush (CBUSH - PBUSH), I tried but it doesn't allow to set two different stiffness in the same direction
I would like to use something like CGAP - PGAP which is also valid in the dinamic (normal mode) simulation.
All the recommendations are welcome! Thank you very much in advance.
Marco
