A fast CMS technique for computational efficient system re-analyses in structural dynamics

Sensitivity analyses, model calibration techniques, uncertainty quantification methods, reliability computations and design optimization methods require a moderate to large number of system re-analyses to be performed for different values of system parameters. For finite element models involving hundreds of thousands or even million degrees of freedom and localized nonlinear actions activated during system operation, the computational demands from repeated system re-analyses may be excessive. This study, reported in this paper, develops fast efficient component mode synthesis (CMS) algorithms to alleviate the computational burden arising in methods involving system re-analyses. ©Civil-Comp Press, 2013