A numerical scheme to couple subdomains with different time-steps for predominantly linear transient analysis Original Research Article

This paper generalizes the explicit/implicit time-integration algorithms pioneered by Belytschko, Hughes and their respective co-workers, and the FETI domain decomposition methods introduced by Farhat and his co-workers, to the case where the same Newmark scheme, but different β and γ coefficients and different time-steps, are specified in each subdomain. Building upon the work of Farhat, Crivelli and Géradin, it considers various interface boundary constraints and performs a stability analysis of the proposed time integration algorithms.