Nonlinear Dynamics of Inverted Pendulum Driven by Airflow

摘要

A nonlinear model of inverted pendulum that exhibit unbounded single well 6 potential is described. The complete equation for one-dimensional wind-induced sway is derived. The harmonic balance method along with Melnikov theory are used to seek the effects of aerodynamic drag forces on the amplitude of vibration, on the structure failure, and on the appearance of horseshoes chaos. Numerical simulations have been performed to confirm analytical investigation.