Hi Peter, 


Thanks for the reply!

What type of mesh setting did you used to get the results of solid model? I have the same support condition and loading but the model is in concrete instead and I am getting stress increase every time I reduce the mesh size. That's strange!

First, I had a 3m mesh, I got 16.57 MPa, which is quite close to the value you are getting.


Second, I reduce mesh size to 1m, I am getting 18.29 MPa.


Then when I tried 0.5m mesh, I am getting 19.94 MPa.


It keeps incresing as the mesh size decrease.



Best regards,