Hi Peter,

When I further refine the mesh you used, the stress shoot up again.

After a bit of research, now I know where this gets wrong! It was due to stress singularity at the fixed support! This issue only shows up when using ANSYS default Fixed Support.

This is a close-up snapshot of stress singularity at the toe of fixed end when using Fixed Support,


This is a better stress distribution using Remote Dispacement (with all dofs set to 0),


Also, the latter boundary condition shows no sign of divergence when the mesh gets finer and agree well with my hand calculation!


Anyway, thank you very much for your support and dedication! I wish you the best and stay safe and healthy!