Crack length measurement during SMART fatigue crack propagation analysis

- June 6, 2023 at 12:54 pm
  
  Joonseong Lee
  Subscriber
  
  In the crack aspect ratio a/c, it seems that the value of a can be obtained with a crack extension probe, but the value of c cannot be obtained?
  I tried calculating by directly taking a node, but the distance is not calculated normally because a new node number is not created after remeshing.
- June 8, 2023 at 9:50 am
  
  Lydia
  Ansys Employee
  
  Hello Joonseong,
  Assuming that your problem involves an elliptically shaped crack, try using the crack length percentage in the crack extension probe in Mechanical.
  The crack length will be the crack length probe with crack length percentage 0% or 100% (depends on orientation of crack front). The crack depth you will also get through crack length percentage 50%.
  - June 12, 2023 at 4:42 am
    
    Joonseong Lee
    Subscriber
    
    Thanks for the advice. Is it correct to find the crack depth a when set to 50%, and the crack length c when set to 0 or 100%?
    - June 12, 2023 at 8:56 am
      
      Lydia
      Ansys Employee
      
      yes, exactly!
    - July 31, 2023 at 3:13 pm
      
      Joonseong Lee
      Subscriber
      
      In the meantime, I was able to get the crack lengths a and c well by setting the crack length percentage, but suddenly, no matter what percentage I applied, only the value at c (0%) came out. Can you tell me why?
    - August 1, 2023 at 8:30 am
      
      Joonseong Lee
      Subscriber
      
      I think it's because you set 'Min Increment of Crack Extension' and 'Max Increment of Crack Extension' to the same value, is that correct?

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