Numerical simulation for flutter stability of eccentric bridge section based on fluid-structure interaction

PDF(2544 KB)

Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (17) : 203-209.

JIA Jie, HAN Rongxuan

Author information +

History +

Abstract

Taking the finite element (FE) software Ansys Fluent as a platform, wind-induced vibration of a 2-D 2-DOF eccentric bridge deck section was studied. Newmark-β method was embedded into user defined functions (UDF), and free vibration considering fluid-structure interaction was realized by solving the corresponding differential equations and updating the corresponding physical quantities in each time step. Compared with a non-eccentric bridge segment model, both left and right sides of dynamic equation for an eccentric bridge segment model have coupled terms. Newmark-β method was used to solve the eccentric 2-DOF dynamic equation set and simple harmonic loads were input for debugging. Numerical solution was compared with the analytical one to verify the correctness of the simulation procedure. It was shown that the numerical simulation value of flutter critical wind speed for the non-eccentric bridge segment model agrees well with the test value obtained by other researchers. The proposed simulation method was used to further simulate effects of eccentricity on the flutter stability of the bridge segment model to improve the method’s effect, and wind tunnel tests were used to verify the reliability of numerical simulation.

Key words

fluid-structure interaction / numerical simulation / eccentric bridge section / dynamic mesh / computational fluid dynamics (CFD) / flutter

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

JIA Jie, HAN Rongxuan. Numerical simulation for flutter stability of eccentric bridge section based on fluid-structure interaction[J]. Journal of Vibration and Shock, 2020, 39(17): 203-209

References

[1] 梁友科. 大跨度悬索桥施工阶段颤抖振响应及颤振机理研究[D]. 长安大学, 2017.
LIANG Youke. Study on the Flutter-Buffeting Performance and Flutter Mechanism of Span Suspension Bridge under Different Construction Stage[D]. Chang’an University, 2017.(in Chinese)
[2] 罗延忠, 陈政清, 韩艳. 有偏心桥梁断面气动导数识别的分段扩阶最小二乘迭代法[J]. 工程力学, 2007, 24(4):104-112.
LUO Yan-zhong, CHEN Zheng-qing, HAN Yan. Subsection extended order iterative least square method for aerodynamic derivative identifications of eccentric bridge section models[J]. Engineering Mechanics, 2007, 24(4):104-112.(in Chinese)
[3] 曹丰产, 项海帆, 陈艾荣. 桥梁断面的气动导数和颤振临界风速的数值计算[J]. 空气动力学学报, 2000, 18(1):26-33.
CAO Fengchan, XIANG Haifan, CHEN Airong. Numerical Assessment of Aerodynamic Derivatives and Critical Wind Speed of Flutter of Bridge Decks[J]. Acta Aerodynamica Sinica, 2000, 18(1):26-33. (in Chinese)
[4] 祝志文. 桥梁风效应的数值方法及应用[D]. 中南大学, 2002.
ZHU zhiwen. Numerical Approaches and Their Applications to Wind Effects on Bridges[D]. Central South University, 2002. (in Chinese)
[5] 李永乐,朱佳琪,唐浩俊. 基于CFD和CSD耦合的涡激振和颤振气弹模拟[J].振动与冲击,2015,34(12):85-89+114.
LI Yong-le, ZHU Jia-qi, TANG Hao-jun. Aeroelastic simulation of vortex-induced vibration and flutter based on CFD/CSD coupling solution[J]. Journal of Vibration and Shock, 2015,34(12):85-89+114. (in Chinese)
[6] Phongkumsing S, Wilde K, Fujino Y. Analytical study on flutter suppression by eccentric mass method on FEM model of long-span suspension bridge[J].Journal of Wind Engineering and Industrial Aerodynamics. 2001,89(6): S 15-534.
[7] Allan Larsen. Prediction of aeroelastic stability of suspension bridges during erection[J]. Journal of Wind Engineering & Industrial Aerodynamics,1997,72.
[8] Scanlan R H, Tomko J J. Airfoil and bridge deck flutter derivatives [J]. J. Eng. Mech. Div. ASCE, 1971, 97(6): 1717~1737.
[9] 万国朝. 大贝尔特悬索桥设计[J].国外公路,1995(01):11-17.
WAN Guochao. Design of Great Belt suspension Bridge[J].Journal of Foreign Highway, 1995(01):11-17. (in Chinese)
[10] Frandsen J. Comparison of numerical prediction and full-scale measurements of vortex induced oscillations[C]. Proceedings of the 4th International Colloquium on Bluff Body Aerodynamics and Applications, Bochum, Germany,2000.
[11] Taylor Z, Gurka R, Kopp G A. Geometric effects on shedding frequency for bridge sections[C]. Proceedings of the 11th Americas conference on wind engineering, San Juan, Puerto Rico, 2009.
[12] Zhang H, Xin D, Ou J. Wake control of vortex shedding based on spanwise suction of a bridge section model using Delayed Detached Eddy Simulation[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2016, 155:100-144.
[13] Simiu E,Scanlan R H.Wind Effects on Structures:An Introduction to Wind Engineering［M］.New York: JohnWiley & Sons Inc,1996: 191-192.
[14] Larsen A , Walther J H . Aeroelastic analysis of bridge girder sections based on discrete vortex simulations[J]. Journal of Wind Engineering and Industrial Aerodynamics, 1997, 67(97):253-265.