Aeroelastic stability critical conditions of double symmetric sections stressed by wind along a symmetry axis are analyzed in the quasi-steady regime. Because of coupling due to aerody-namic forces, the instability is of flexural-torsional type and it is governed by two degree-of-freedom equations of motion. The use of perturbation techniques allows determination of analytical eigensolutions, both for resonant and non-resonant systems. The influence of detuning between the two natural frequencies on wind critical velocity is investigated.

Stabilità aeroelastica flesso-torsionale di sezioni doppiamente simmetriche

PICCARDO, GIUSEPPE
1999

Abstract

Aeroelastic stability critical conditions of double symmetric sections stressed by wind along a symmetry axis are analyzed in the quasi-steady regime. Because of coupling due to aerody-namic forces, the instability is of flexural-torsional type and it is governed by two degree-of-freedom equations of motion. The use of perturbation techniques allows determination of analytical eigensolutions, both for resonant and non-resonant systems. The influence of detuning between the two natural frequencies on wind critical velocity is investigated.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11567/393162
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