axial load ratio in modelling plastic hinges of HSS columns

[mrezaaa]

Hello
How can I find the value of the axial load ratio (N/Ny : applied axial load to yield load) in the formulas inside prof. Lignos's thesis for the modelling of plastic hinges using the Ibarra-Krawinkler method and Bilin material in HSS columns ?

thanks

[selimgunay]

Did you try contacting him? He is quite responsive to emails, he would probably reply if not busy.

[mrezaaa]

No. I did not try to contact him. I now email him and hope to answer me.
Thank you very much for your answer.