Abstract: It can decrease significantly the computation time in transient structural analysis to use subcycling algorithms which permit multiple time steps in explicit integration. Several subcycling algorithms are tested and it is shown that constant velocity subcycling algorithm possesses the best accuracy and stability properties. A new subcycling algorithm based on special treatment of rigid joint and proper choice of damper is proposed. The numerical example show that the algorithm present with higher computational efficiency with out losing accuracy.

Key words: Computational efficiency, Finite element, Rigid linking, Subcycle