Ingrid Machecler
Ansys Employee
Hello Medi,
could you please tell us more about what you are trying to model?
In the meantime, if you want to model the damping that acts in extension, you can use the external user force. You have some examples and a README in your installation, under the aqwa\utils folder. You can start the server as a pre-solve command (see section 5.8.1 of the Aqwa User's manual).
Kind regards Ingrid