| This dissertation contains a finite element analysis of the nonlinear response of suspension bridges subjected to static and dynamic loads. In the development of the equations of motion, the geometric nonlinearities of the cable and deck elements as well as nonlinear stress-strain relations of elasto-plastic type have been taken into account. The problems analyzed contain the determination of static positions of equilibrium of a bridge subjected to aero-dynamic forces of steady wind, the dynamic response of a bridge subjected to moving loads, simulation of the motion of a bridge subjected to buffeting and self-excited wind forces. Criteria of static and dynamic instability of bridges under wind loading have been formulated. |
