Numerical modeling of the longitudinal vibration of prestressed concrete cables under different level of tension

Dear researchers,

I am Using ABAQUS software for the goal to get a successful model in the non-linear analysis of the prestress magnitude effect on the longittudinal vibration frequency of tendons. I a am applying different axial forces on the cable on his both ends in order to observe the changes in frequency to compare with experimental tests found in the literature, but the results are not in agreement yet. Any idea how to get a succeful modeling is akwoledged.

Thank you in advance