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Explicit Dynamics using true stress or engineering stress?

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    • February 26, 2023 at 3:10 pm
      Benjamin See
      Subscriber

      I am currently doing a compression and impact simulation test on a lattice structure. I inserted a von mises stress probe on the entire structure to measure the stress. 
      However, I am unsure if ANSYS calculates the true stress or the engineering stress in this case.

      Does anyone have any knowledge regarding this? 

    • February 26, 2023 at 3:44 pm
      peteroznewman
      Subscriber

      Ansys results are True Stress

      • February 28, 2023 at 7:06 am
        Benjamin See
        Subscriber

        Thank you for the reply! 

      • February 28, 2023 at 7:13 am
        Benjamin See
        Subscriber

        May I ask if it is possible to convert engineering stress to true stress in the same way as you convert engineering strain to true strain? With the formula of ln ( 1 + _ ). 

    • February 28, 2023 at 10:58 am
      peteroznewman
      Subscriber

      No, that is not correct. Please review the courses below.

      Here is one course on Metal Plasticity

      Here is another course on Plasticity

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