2D Plane Stress Example needs slight update

[mikerife]

Description of the modifications

The 2D Plane Stress Concentration Example will not return the correct stress concentration plot. The MAPDL/PyMAPDL and PyMAPDL Reader can post process both the single/combined result file along with the individual result files (one for each DMP core used). The second time through the loop both the combined and individual files exist so the prior analysis is being post processed. The simple correct is to add a "finish" [ mapdl.finish() ] following the PyMAPDL solve command. This will force MAPDL to combine the core result files into one result file.

Mike

Useful links and references

No response

[pmaroneh]

Other solution is to run in SMP mode through mapdl = launch_mapdl(additional_switches='-smp')

[germa89]

@mikerife I'm adding mapdl.finish() after both mapdl.solve() commands. See this PR #2558 .
Also, how the h*** did you find out that error?

@pmaroneh I think your suggestion is very useful, so the users are more aware of differences between SMP and DMP. But because how the documentation runs on GitHub, doing that change won't have any effect. Basically because the examples do not start MAPDL instances, they just connect to an existing one.

[pmaroneh]

The way I had found out is that the plot comparing the computed results with the analytical results don't match if you use DMP.

[mikerife]

@mikerife I'm adding mapdl.finish() after both mapdl.solve() commands. See this PR #2558 . Also, how the h*** did you find out that error?

@germa89 It started by noticing that there was a set of core rst files and a combined rst file the second time through the loop, then asking myself "WTF" since it should be one or the other.