Ok, Meca. The answer to your question is very simple. You must become familiar with ANSYS (software - I will say technology because the ANSYS is technology).
are the best. If you visit their galleries, you'll see many interesting cable structures modelled using these softwares. If your problem requires also plate elements, next choice would be Gt-strudl. Staad III/Pro's or Strap's cable elements are insufficient.