Abstract
This paper discusses a time-domain representation of wind-induced gust response analysis based on state space equations. Wind fluctuation, aerodynamic admittance and structures can be considered as linear filters, respectively, and these filters are described by state space equations. These three sets of equations are combined to obtain one set of equations with the white noise as input and the gust response as output. Frequency-dependent self-excited aerodynamic forces are included in this formulation by introducing frequency-independent finite state approximate model. Aerodynamic coupling and correlation between vibration modes of structure can be systematically considered by this time-domain method.
