Description: The selective subcycling method is now available in Abaqus/Explicit. Subcycling allows different time increments to be used for different groups of elements and can reduce the run time for an analysis when a small region of elements in the model controls the stable time increment. Subcycling zones are defined by the user and remain unchanged during the analysis.

The subcycling zone can be integrated with a stable time increment smaller than the non-subcycling zone. Efficient selective subcycling requires proper choice of subcycling zones. The subcycling zone should contain the elements that control the stable time increment in the finite element model. The number of elements in a subcycling zone should generally be small compared to the total number of elements in the model. If a majority of elements in the model are in subcycling zones, there will not be much performance benefit.

If subcycling is used in conjunction with multiple parallel domains, each subcycling zone and the non-subcycling zone will be decomposed into the specified number of parallel domains.