Application of indicial functions in bridge deck aeroelasticity
- 作者：Carlotta Costa ; Claudio Borri
- 关键词：Bridge aeroelasticity ; Time-domain simulations ; Unsteady forces ; Indicial functions ; Flutter instability
- 刊名：Journal of Wind Engineering and Industrial Aerodynamics
- 出版年：2006
- 期刊代码：55_01676105
- 类别：ms
- 出版时间：November 2006
- 卷：94
- 期：11
- 页码：859-881
- 文件大小：931 K
摘要
This contribution deals with some recent studies on numerical and analytical models for the evaluation of aeroelastic response of cross-section models of long span bridges. The time-domain indicial approach, whose validity has been only partially investigated in the past, is selected for the modeling of self-excited forces. Sets of indicial function coefficients are estimated for rectangular cross-sections, and their applicability is proven, through time-domain simulations and comparison with experimental tests. Critical flutter condition and dynamic pre-critical and post-critical behaviors are evaluated.