PARALLEL TRANSIENT ALGORITHM WITH MULTISTEP SUBSTRUCTURE COMPUTATION

A parallel algorithm for computing the transient response of structures is presented. The computation is parallelized on the basis of a division of the structure into substructures, with each processor computing the response of a substructure independently. Independently computed substructure responses are reconciled directly, rather than iteratively, to obtain the solution of the global problem. The only data required for correcting the independently computed response of a substructure is the interface motion computed independently for other substructures. Reconciliation of substructure responses is not required after every time step; instead, it can be postponed until after the responses have been computed independently for multiple time steps. A numerical example is presented that demonstrates the method and its accuracy.