Gyroscopic Vibration Damper for Building: Theoretical and Experimental Research

Year 2022, Volume: 8 Issue: 3, 457 - 471, 31.12.2022

Faruk Ünker , Olkan Çuvalcı

Abstract

In this study, a gyroscopic damper model consisting of a built-in column has been developed. The objective of this study is determining the required angular momentum with the optimum ratio of natural frequency for the gyroscopic vibration absorber under sinusoidal excitation. This damper model is investigated experimentally and theoretically for different angular momentums of the gyroscope and different frequency ratios of the structure and damper on a single-story structure. As a result of the study, the displacement of the structure at the 1st mode frequency for a given angular momentum of the gyroscope is fairly reduced. Besides, at a notable frequency ratio of the damper and the structure, the effect of the angular momentum is improved. Even if the disk mass of the gyroscope decreases, it is possible to obtain a certain angular momentum by increasing the disk speed. Thus, lighter and less bulky gyroscopic vibration dampers can be designed. The cooperation of the required angular momentum with the optimum ratio of natural frequencies should be considered to obtain a highest attenuation of the building vibration. In addition, the equations of motion obtained according to the 1st mode and the theoretical results overlapped.

Keywords

vibration control,, gyroscope,, gyrostabilizer,, vibration absorbers,, nonlinear dynamics, damping

Supporting Institution

The Scientific and Technological Research Council of Turkey (TUBITAK).

Project Number

114M760

Thanks

This research was funded under Grant no: 114M760 by the Scientific and Technological Research Council of Turkey (TUBITAK).

Bina için Jiroskopik Titreşim Sönümleyici: Teorik ve Deneysel Araştırma

Abstract

Bu araştırmada, kolon üzerine bağlanmış bir jiroskopik sönümleyici modeli üzerine çalışılmıştır. Bu çalışmanın amacı, sinüzoidal zorlayıcı yük altında jiroskopik titreşim sönümleyici için gerekli açısal momentum ile optimum doğal frekans oranı belirlenmesidir. Bu sönümleyici modeli, tek katlı bir yapı üzerinde jiroskopun farklı açısal momentumları ve yapı ile sönümleyicinin farklı frekans oranları için deneysel ve teorik olarak incelenmiştir. Çalışma sonucunda, jiroskopun belirli bir açısal momentumu için yapının 1. mod frekansında yer değiştirmesi oldukça azaltılmıştır. Ayrıca, sönümleyici ve yapının belli bir frekans oranında açısal momentumun etkisi iyileşmiştir. Jiroskopun disk kütlesi azalsa dahi disk hızını artırarak belirli bir açısal momentum elde etmek mümkündür. Böylece daha hafif ve daha az hacimli jiroskopik titreşim sönümleyici tasarlanabilir. Bina titreşiminde en yüksek sönümleme elde etmek için, gerekli açısal momentumun ile optimum doğal frekans oranı ile bağlantısı hesaba katılmalıdır. Ayrıca 1. moda göre elde edilen hareket denklemleri ile teorik sonuçlar örtüşmüştür.

Keywords

titreşim kontrolü, jiroskop, jirostabilizer,, titreşim yutucular,, doğrusal olmayan dinamikler,, sönümleme,

Project Number

114M760

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