Naslov
Self-excited Torsion Vibrations of Symmetric Structures

Autori
Raduka, Verica

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Structural Dynamics - EURODYN 2005 / C.Soize & G.I.Schueller - Rotterdam : Boston (MA) : Taipei : Millpress Science Publishers, 2005, 1493-1498

Skup
International Conference on Structural Dynamics

Mjesto i datum
Pariz, Francuska, 04.09.2005. - 07.09.2005

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
torsion; resonance; parametric; instability; vibration; chaos

Sažetak
Earthquake damages at the buildings perimeter showed that even symmetric structures could exhibit torsion vibrations. The Seismic Design Codes include a simple design provision to account for accidental torsion in the response of the buildings with nominally symmetric plan. The accidental eccentricity is related to structure plan dimension, but not to structure frequencies. In this paper, nonlinear coupling of the two lateral and torsional responses of a simple total plane symmetry model during simplified horizontal and vertical earthquake excitation is investigated. The self-excited torsional vibrations influenced by structure parameters due to these excitations are presented. The stability of oscillations has been controlled numerically in the sense of Liapunov. The occurrence of parametric instability due to vertical motion of structure supports, and some of the particular resonance solutions, are discussed and shown on the phase portraits.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

Napomena
Zbornik međunarodnog skupa s međunarodnom recenzijom

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