Stresses from ABAQUS output

[compe_ad]

I am modeling a concrete cylinder compression test (see attached). Loading is applied along z direction, and I am checking the sigma_33 stresses. I am having maximum signma_33 at the element centroid around 78 MPa (see attached graph). I don't get it why it is higher than the ultimate concrete strength of concrete (58 MPa).
Can you please help me understand why I am getting stresses higher than the ultimate stress of concrete that I have defined in the properties?

 

[SWComposites]

Graph missing.
What exact material properties are you entering?

 

[compe_ad]

Please take a look at this.

 

[bkal]

I have responded to this in Finite Element Analysis (FEA) engineering.

 

[n39]

I've been this situation before, I also didn't see why the reason, but in my case, I was using a stirups and the concrete ultimate strength increase from 52 to 57, I am assuming that it is caused by the stirups, since the lateral confining pressure increase the concrete strength. I see you are working on a dynamic analysis, perhaps you should consider the concrete failure, so ABAQUS know that when it reaches the ultimate stress, the concrete will fail (

https://www.youtube.com/watch?v=PTRQib7C6po&list=PLz_XdUL-6Y_k-LgmCKo5ejqRAGpfXPk23&index=25)

you can refer to that video from youtube.