Análise dinâmica de estruturas por intermédio de marcha no tempo com parametrização local associada ao método dos elementos finitos

Abstract

The present work describes a new time marching procedure for structural dynamics analyses. In this novel technique, time integration parameters are locally defined and diferent values may be attributed to each structural element of the model. In addition, these parameters are evaluated according to the properties of the elements, and the user may select in which structural elements numerical dissipation will be introduced. Since the integration parameters are locally defined as function of the structural element itself, the time marching technique adapts according to the model, providing enhanced accuracy. The method is second order accurate, it has guaranteed stability, it is truly self-starting and it allows highly controllable algorithm dissipation in the higher modes.Também disponível on-line.