Aerodynamic Force and Aeroelastic Response Characteristics Analyses for the Galloping of Ice-Covered Four-Split Transmission Lines in Oblique Flows

In order to study the galloping mechanism of ice-covered four-split transmission lines in oblique flows, aerodynamic forces and aero-elastic response characteristics crescent-shaped are investigated through wind tunnel tests on rigid models. According Den Hartog Nigel’s theories, damping coefficients calculated based experimental data. The results show that usually suffer from torsional galloping. Furthermore, data, is characterized by an elliptical trajectory, negative ratio, a strain at hanging position. addition, appears be more prone occur under with larger amplitude lower critical speed. This might because out-of-plane vibration third-order mode excited speed, leading coupled resonance between in-plane vibrations frequency ratio 1:1. this paper can also used verify fluid-structure interaction simulation method lines.