Dynamic Analysis of Complex Structural Systems

Attention is focused on the characterization of the stochastic response of nonlinear complex systems subjected to stochastic external excitations. Non-linearity arises from geometrical considerations and/or material properties. Since exact analytical solutions can be found only in the case of systems idealized by one or few degrees of freedom, approximate methods have been developed. For practical applications in structural engineering the techniques of the stochastic equivalent linearization and of the response surface appear as the most suitable. These methods are illustrated in this Chapter.