Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
VIBRATION CONTROL OF SLENDER STRUCTURES WITH OPTIMIZED LIQUID COLUMN VIBRATION ABSORBERS
Submission Author:
Jéssica Carolina Barbosa Vieira , PR
Co-Authors:
Jéssica Carolina Barbosa Vieira, Thiago da Silva, Carlos Alberto Bavastri
Presenter: Jéssica Carolina Barbosa Vieira
doi://10.26678/ABCM.COBEM2019.COB2019-0470
Abstract
Liquid Column Vibration Absorbers (LCVA) are devices used to control/reduce low frequency vibrations in slender structures such as buildings, offshore structures, among others. The sources of excitation may be diverse, such as: wind, seismic, unbalance and waves of the sea. In this paper, the performance and effectiveness of a LCVA is investigated. LCVA was designed using nonlinear optimization techniques to control the first vibration mode in a small-scale eight-story building. The scale model of the building represents, without loss generality, slender structures of low frequency. To evaluate the performance of the designed control device, a set of experimental analysis are conducted on the model of the building. These analyses were performed using Frequency Response Functions (FRF) measurements (Inertance), where the excitation was performed with an impact hammer and the response was obtained by an accelerometer. Thus, the effectiveness of the LCVA can be measured based on the reduced frame response presented in the FRF.
Keywords
Liquid Column Vibration Absorbers, Vibration control, Passive Vibration Control, Non-linear optimization techniques
