Lydia
Ansys Employee

Hi,

What type of Analysis are you performing? 

You might want to check this explicit dynamics analysis ANSYS Reinforced Concrete Beam (RC BEAM) - Explicit Dynamics (youtube.com)

You can also check how the Static Analysis is being handled by this guys ANSYS Tutorial Reinforced Concrete Beam (RC BEAM) - Static Structural (youtube.com and ANSYS Tutorial: Nonlinear analysis of Reinforced Concrete Beam and compare with test results (youtube.com)