Zusammenfassung
l\ nntl1~·1iatical uooel is presi?nt?.d for wind-·induc_
0·3cillati0ns of cylin:ldcal structures. Because of the
co•11plexi ty of the excitation mechanism (Karman vorte~
shedding), the rro1el is based on wind tunnel studies of ~
circular rigid cylin1er rrounted on a el~stic suspension and
oc;cill3ting transv~rsally in a flowing fluid. lanalytica~
expression for the excitiny forces is proposed and incorporateq
in the equation for the oscillatory mov~ment of the cylinder. ~
non··linear appro3ch using the multiple tine scale method i!:!
3dopted to investigate these oscillations. The amplitudes o~
th'? limit-cycles are obtained near to the resonant condition ·I
The analysis shows that the main characteristics observed
experirrent-:illy can be described by this mo1el.
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