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PropagateLength Command

The PropagateLength command changes the amount of crack growth that occurs each time the crack propagates:

PropagateLength (relLength)

where (relLength) is the amount of crack growth (entered as relative to cell dimensions) for each increment in crack growth. The default value is 0.5, or half an element per propagation increment. This setting usually works well. For situations where a different choice might help, see the OSUPDocs wiki for details).

Notes

  1. A good check on influence of this setting is to vary its value and plot crack length. If the setting changes the crack propagation rates or makes crack growth erratic, its setting may be causing artifacts in the simulation.
  2. The PropagateLength command is only allowed for MPM analyses.