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IS IT POSSIBLE (TIME STEPS)

IS IT POSSIBLE (TIME STEPS)

IS IT POSSIBLE (TIME STEPS)

(OP)
Hello
We're modeling the aluminium casting process by adding layers of discrete thicknesses using the *MODEL CHANGE command and a sequence of *STEP commands.  As an example, in step #1, layer #1 is added and then the boundary conditions are applied for five seconds.  Then the step ends.  In step #2, layer #2 is added (so now layers #1 and #2 are active) and both layers are now being cooled by the boundary conditions for another five seconds.  Then the step is ended and layer #3 is added, etc.  
Questions:
a)Is their any way to change the step time after it has been defined in the input deck?
OR
b)Is their any way to exit a step before the time is completed, and go onto the next one?

I know one can use USDFLD, etc (pnewdt) to change the time increment, but what about the time step?

Thanks,Andre

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