David Weed
Ansys Employee

In 2021 R1, there exists the native capability of specifying reinforcement behavior (elements REINF264/265) via the use of line or surface bodies. See the help discuss this in detail here:
https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v211/en/wb_sim/ds_reinforcement.html
We also have a Technology Showcase example which incorporates the use of smeared reinforcement; it is done with command objects, but it may provide some additional tips on incorporating reinforcement elements, in general: https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v211/en/wb_wbtec/WBtecdynardo.html