David Weed
Ansys Employee
Hi Afrah If time t is the point at which KIC is reached w/o SMART, then set the time step size to get there in a few delta t's (it may help to think in terms of time steps rather than substeps since you'll be dealing with time, in general; in the Analysis Settings you can define Step Controls by Time rather than Substeps). This should be set independent of the total time of the simulation (which you denoted as 'x'); solely take into account the time 't' where KIC is reached. When you run SMART and KIC is reached within a few time steps, then the SMART time step controls should take over until the final time 'x' of the simulation.