悬索桥气弹性稳定CFD分析(英文)

As a consequence large deformations at the mid-span can occur with risk of aeroelastic instability and structural failure. Analysis of aeroelastic stability also named flutter stability is mostly based on semi-empirical engineering models, where model specific parameters, the so-called flutter derivatives, need calibration from wind tunnel tests or numerical methods. Several papers have been written about calibration of flutter derivatives using CFD models and the aeroelastic stability boundary has been successfully determined when comparing two-dimensional flow situations using wind tunnel test data and CFD methods for the flow solution and two-degrees-of-freedom structural models in translation perpendicular to the flow direction and rotation around the span axis of the bridge section.