"Verification and validation" can be thought of as a formal process for checking results. We previously performed some sanity checks on the deformed shape. A further basic check includes determining how the results change on refining the mesh. The following video shows how to recalculate the results on a refined mesh. Note that it comes from a different project, but the procedure is the same.
By now, you should know that refining meshes is important for getting an accurate result for the problem specification. For Transients, time becomes a similar refinement problem in addition to the mesh refinement.
As an example, here is a plot of time at x= 0.5, with the timesteps altered.
Here is the data for the numerical solutions: Transient_2D.xlsx