Wind-Induced Vibrations of a Mass-Spring System

摘要

The dynamics of a simple elastic structure in a uniform wind field is studied. A nonlinear theory including a starting and limiting mechanism is introduced for systems with one and two degrees of freedom. In the one degree of freedom approach a generalized Van der Pol equation is used. In the two degrees of freedom approach a quadratic system may be used to describe the wind-induced vibrations. The equations of motion are analyzed by the averaging method.