Using Mystran inside Mecway

Fatmac · April 8

I have been keen to run a little study on shells vs solids and was particularly interested to see how mystran performed. I set up a simple test with 100x100 mm 1mm thick ,100 GPa material which was simply supported. in both shells and solid. ( I realise my solid supports and perhaps not exactly as the shell supports but close enough for this quick look i think.) I imagine the results will not surprise anyone (although I was impressed how few elements Mecway and Mystran shells required to get close to the theoretical value)

What was a little more surprising to me was how ( this setup) how poorly the mystran solid elements performed. I do wonder if I am missing something in the set up as I could also see no stress or stain values for the mystran output

Fatmac · April 8

no stress or strain output for the mystran test

Victor · April 8

Mystran's 8-node hex is just the classic compatible mode formulation so it's terrible in bending. Hex20 should be OK though.

Stress should be available for both solids and shells. Perhaps post your .liml file and I'll see what's wrong.

Fatmac · April 8

i expect it will be something stupid i 4got to do!

Victor · April 8

Stress appears for me. You do have to solve it again if you added stress after it solved - unlike the internal solver.

Are you using the Mystran that's installed with Mecway, not one you obtained separately?

Fatmac · April 9

that was it - i had pointed to a version i downloaded from the mystan website -mystran-17.0.0-windows-x86_64.exe, it ran but only the displacements were displayed, now i have gone back to the version shipped with MW33 all is good -thank you

Sergio · April 9

Hi Victor, would be great if the postprocessor view show the solver and version used, now that there is Mecway/CalculiX/OpenRadioss/Mystran available that could be a usefull information.

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Using Mystran inside Mecway

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