TY - GEN
T1 - Aeroelastic modelling of long-span suspension bridges
AU - Graham, J. Michael R.
AU - Limebeer, David J.N.
AU - Zhao, Xiaowei
PY - 2011
Y1 - 2011
N2 - The 2D aerodynamic modelling of long-span suspension bridges is considered. We use thin airfoil theory from the aircraft industry and a sectional bridge model with an integrated controllable trailing-edge flap. The relatively less well known aerodynamic properties of leadingedge flap will be studied in detail. The optimal approximation of the classical Theodorsen circulation function will be studied as part of the bridge sectional model building exercise, which can therefore be re-casted in a form suitable for control systems analysis and design. The critical wind speeds for flutter and torsional divergence are predicted precisely. Static winglets are shown to be relatively ineffective to mitigate torsional divergence.
AB - The 2D aerodynamic modelling of long-span suspension bridges is considered. We use thin airfoil theory from the aircraft industry and a sectional bridge model with an integrated controllable trailing-edge flap. The relatively less well known aerodynamic properties of leadingedge flap will be studied in detail. The optimal approximation of the classical Theodorsen circulation function will be studied as part of the bridge sectional model building exercise, which can therefore be re-casted in a form suitable for control systems analysis and design. The critical wind speeds for flutter and torsional divergence are predicted precisely. Static winglets are shown to be relatively ineffective to mitigate torsional divergence.
UR - http://www.scopus.com/inward/record.url?scp=84860664472&partnerID=8YFLogxK
U2 - 10.3182/20110828-6-IT-1002.03156
DO - 10.3182/20110828-6-IT-1002.03156
M3 - Conference contribution
AN - SCOPUS:84860664472
SN - 9783902661937
T3 - IFAC Proceedings Volumes (IFAC-PapersOnline)
SP - 9212
EP - 9217
BT - Proceedings of the 18th IFAC World Congress
PB - IFAC Secretariat
ER -