Concrete compression damage

[Sara.......]

Hi! I'm doing a cyclic analysis in Abaqus, imposing the displacement on a face of a cube. I define the damage parameters in tension and in compression and the corresponding inelastic and cracking strain, but when I plot the results in the unloading part I don't have a change of stiffness. How can I show the damage?

Thanks!

 

[FEA way]

Since you are performing a simple test analysis on a cube, single element test examples from the Verification --> Material Verification --> Mechanical properties --> Concrete damaged plasticity documentation chapter may be particularly useful.