Forced vibration analysis of a simply supported beam with axial tension
I want to simulate a pre-tensioned overhead electric conductor subjected to wind induced vibrations. As a initial validation part I'm validating previous work done in this domain. The reference work is attached with this post. In the reference work a conductor in axial tension is modeled as pin supported beam. Then it subjected to a time varying sinusoidal lift force due to wind in vertical direction. They have carried a transient structural analysis to see the displacements with respect to time. I have modeled it as a beam in ansys workbench as a line body with circular cross-section pinned at the one end and roller support at the other end . I have performed a transient analysis with two time steps . The total time of simulation is 21 sec (reference simulation was 20 sec). The loading for the two steps are:
1. axial tension(constant)(1 sec) at roller end.
2. axial tension(constant) at roller end and wind load(line pressure- sinusoidal) acting on the conductor in vertical direction for next 20 sec.
My results are not matching the reference work results. Is it due to wrong BC applied? . Please help me , how to consider Pre-tension in a beam?