General Mechanical

General Mechanical

Topics related to Mechanical Enterprise, Motion, Additive Print and more.

ANSYS Additive Print Thermal Strain Simulation

    • cnadkins
      Subscriber

      I have been using the ANSYS Additive Print & Science simulation framework to model residual stress after a LPBF print (thermal strain simulation). When running the simulations for a 316L print, I am getting von mises stress values that are exceptionally high (average of 1275 MPa, for reference the yield strength of 316L is only 494 MPa). The simulations have been run on a small hex that is 8mm point to point & 3mm high. I have attached a screenshot of the parameters that I am using, these are very close to the recommended print parameters for 316L. Why are these results so high? Is there some additional parameter, setting, or calibration that needs to be changed to recieve more accurate estimates? Thank you.

       

    • John Doyle
      Ansys Employee

      Make sure you are running this with J2 plasticity included, and not just inherent strain.

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