SMART crack growth – critical crack length

- December 14, 2020 at 1:48 pm
  
  nw196
  Subscriber
  
  Hi,I'm running a fatigue cycle on a hollow cylinder of shell thickness 40mm, with a Semi Elliptical Crack on the surface. nMy SMART crack model runs up to a crack extension of 24mm after a cycle of ~77000 cycles, at which point the model stops. nHas it stopped at 24mm as the software believes this is the critical crack length? or because it's met some other parameter? nI have not set a predetermined crack length or time for the model to stop.Any help appreciated.n
- December 15, 2020 at 1:27 pm
  
  Ashish Khemka
  Forum Moderator
  
  nFor the SMART crack model do you have the Auto Time Stepping set to Program Controlled?nSMART crack growth will only calculate the first result in that case because the solver will default to one substep. For calculating more increments you need to specify more substeps. For instance, set Auto Time Stepping to 'Off' and then specify the number of substeps.nRegards,nAshish Khemkann

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