Open AccessGALLOPING INSTABILITY ANALYSIS OF A CABLE-DAMPER SYSTEM
Author(s) -
Nguyễn Huy Cung,
Đỗ Cao Phan
Publication year - 2020
Publication title -
khoa học và công nghệ
Language(s) - English
Resource type - Journals
ISSN - 2525-2267
DOI - 10.46242/jst-iuh.v30i06.370
Subject(s) - damper , instability , structural engineering , aeroelasticity , vibration , mode (computer interface) , stability (learning theory) , engineering , computer science , mechanics , aerodynamics , physics , acoustics , aerospace engineering , operating system , machine learning
Viscous dampers are used widely to mitigate cable vibrations cable-stayed bridges. A damper attached to a stay cable leads to complex modes. The complexity can highly affect the aeroelastic stability of the cable. A galloping instability analysis of cable with an attached damper will be presented. A numerical example points out errors of conventional galloping analysis. The complexity of the mode shapes leads the cable being more unstable than ignoring it by treating the mode shapes as real.