Semi-Elliptical Crack Definition for SMART Crack Growth

- March 27, 2022 at 10:08 pm
  
  TomC
  Subscriber
  
  Hi,
  I'm wondering if anyone can help me out with an issue I'm having with the SMART Crack Growth tool.
  Basically, I cannot fully define the SMART Crack Growth object. The crack selection box is highlighed yellow - I believe this means that the crack I selected (Semi-Elliptical Surface Crack, SEC) is incompatible in some way with SMART Crack Growth.
  I defined a Pre-meshed Crack, which I am more familiar with, and it worked as expected with the SMART Crack Growth tool.
  The SEC solved successfully without the SMART Crack object.
  I tried a few adjustments of the mesh settings in the SEC without seeing any changes. Both the body mesh and the fracture mesh are Tet10 elements.
  I think the troubleshooting I have done indicates that the issue is entirely within the SEC object. I am not sure what else to do from here. I am using ANSYS 2020 R2.
  I'm trying to define a crack with a minor axis of 25 um and a major axis of 175 um, and want to run a fatigue crack growth definition. Any suggestions on how to define it so that it will work with the SMART crack tool?
  Thanks,
  Tommy
- March 28, 2022 at 1:50 pm
  
  David Weed
  Ansys Employee
  
  Can you check to see if Crack Faces Nodes is set to 'On':
  SMART needs both of those named selections.
- March 28, 2022 at 9:55 pm
  
  TomC
  Subscriber
  
  Thanks David. That was exactly it. I was hoping it was something easy.
- March 28, 2022 at 10:01 pm
  
  David Weed
  Ansys Employee
  
  Glad that helped,

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