Reduced-Order Model Based on Volterra Series for Aerodynamics of the Bridge Deck Section and Flutter Critical Wind Speed Prediction

This study proposes a novel reduced-order model (ROM), based on the Volterra series, for aerodynamic force of bridge deck section. Moreover, ROM streamlined box girder section Great Belt East Bridge (GBEB) is identified with computational fluid dynamic (CFD) simulations. Furthermore, an analysis method combining and Newmark-β integration established to simulate aeroelastic responses Finally, wind-induced vibration GBEB are calculated near flutter critical wind speed series-based fluid–structure interaction (FSI) numerical simulations in ANSYS Fluent, respectively. verify applicability proposed method, main crash barriers Lingdingyang (LDYB) also simulated via speed. The results show that first-order truncated this can accurately capture response girder, good agreement those CFD simulation under forced vibration. combined effectively calculate FSI girder. frequency LDYB consistent by Fluent existing experimental results,