Hello Stanko,
By any chance, is your armature a collection of discrete bars that can be represented (geometrically) as line bodies, or perhaps it can instead be modeled as surface bodies with a "smeared" representation of the reinforcing material? If so you might consider reviewing this Help article:
https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v231/en/wb_sim/ds_reinforcement.html
I can't tell from the image you provided whether or not you're trying to use either of the two approaches described in this Help article, but I'm inclined to think this is something you'll at least want to consider.
Kind regards,
Bill
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