General Mechanical

General Mechanical

Weird stress and deformation difference

    • Jurjen
      Subscriber

      As part of a big simulation I was testing some small parts of the simulation.
      In this part i inflate a cylinder from the inside with a pressure of 500 Pa then reset geometry the geometry, resulting in stresses which are almost zero. This part is clear and understandable.


      If i continue to the next step in which i repeat the inflation with 500 Pa, the simulation seem to give a slightly different solution. Whit a higher spreak in both stress and higher peak stress. The same can be seen for the deformations.


      Can someone explain me how this could happen, since both inflations should give the same result right?


      I posted a picture of the stress and deformation curve below.


    • Sandeep Medikonda
      Ansys Employee

      Hi Jurjen,


        Have you double checked the units? I am not quite sure what you mean by reset geometry, can you elaborate? Is the mesh the same?


        Have you tried Clear Generated before re-running your analysis?


      ~Sandeep

    • peteroznewman
      Subscriber

      Hi Jurjen,


      If you create a Workbench Project Archive .wbpz file, you can attach it to your post, I can open it an look in detail. Note that the file size is limited to 120 MB.


      Regards,


      Peter

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