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A platform for research: civil engineering, architecture and urbanism
Galloping and Torsional Divergence
Galloping is a large‐amplitude aeroelastic oscillation that can be experienced by elastically restrained cylindrical bodies with certain types of cross‐section. This chapter describes the Glauert‐Den Hartog necessary condition for galloping motion. The susceptibility of a slender prismatic body to galloping instability can be assessed by evaluating its mean lift and drag coefficients. In the case of flutter, the aeroelastic behavior is characterized by quantities of a similar nature, called flutter aerodynamic derivatives that, unlike the steady‐state derivatives that characterize galloping motion, depend upon the oscillation frequency. The chapter also describes galloping of two elastically coupled square cylinders. Torsional divergence, also called lateral buckling, can occur on airfoils or bridge decks. Like galloping, it can be modeled by using aerodynamic properties measured on the body at rest.
Galloping and Torsional Divergence
Galloping is a large‐amplitude aeroelastic oscillation that can be experienced by elastically restrained cylindrical bodies with certain types of cross‐section. This chapter describes the Glauert‐Den Hartog necessary condition for galloping motion. The susceptibility of a slender prismatic body to galloping instability can be assessed by evaluating its mean lift and drag coefficients. In the case of flutter, the aeroelastic behavior is characterized by quantities of a similar nature, called flutter aerodynamic derivatives that, unlike the steady‐state derivatives that characterize galloping motion, depend upon the oscillation frequency. The chapter also describes galloping of two elastically coupled square cylinders. Torsional divergence, also called lateral buckling, can occur on airfoils or bridge decks. Like galloping, it can be modeled by using aerodynamic properties measured on the body at rest.
Galloping and Torsional Divergence
Simiu, Emil (author) / Yeo, DongHun (author)
Wind Effects on Structures ; 297-304
2019-02-19
8 pages
Article/Chapter (Book)
Electronic Resource
English
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