An enhanced substructure coupling technique for dynamic re-analyses: Application to simulation-based problems

This work presents the implementation of an enhanced substructure coupling technique in the context of complex simulation-based problems. Attention is focused to problems requiring a large number of dynamic re-analyses of involved finite element models. The enhanced technique is derived by first considering explicitly the effect of higher order substructural modes in the definition of reduced-order models. The formulation is then combined with an effective finite element model parametrization scheme. The performance of the proposed implementation is demonstrated through numerical examples involving the estimation of the dynamic characteristics of a bridge structural model and the Bayesian model updating of a high fidelity finite element model.