Paul,
Just to says thanks for the school, I have not been able to review all your examples, I just have been busy with other stuff, as soon as I try any of your suggestions i will post it
Charles,
ok, now for a cable, wire rope or sling remind that it is made of a Steel alloy which could be an isotropic material, however it is made of multiple strands and twisted, so when in tension it sees torsion also, do not ask me what could be those values I have not run in that need yet.
that is why when a sling or rope needs to be certified they check tension strenght, area reduction and condition of the strands..
Thanks
Antonio