Eventos Anais de eventos
DINAME 2023
XIX International Symposium on Dynamic Problems of Mechanics
Design of a Tuned Mass Damper for a Suspension Bridge Model
Submission Author:
Jose Marcos de Araujo Silva Junior , PR
Co-Authors:
Jose Marcos de Araujo Silva Junior, Paulo Rogério Novak, GIOVANNI BRATTI, Francisco Augusto Aparecido Gomes
Presenter: Jose Marcos de Araujo Silva Junior
doi://10.26678/ABCM.DINAME2023.DIN2023-0089
Abstract
Tuned Mass Dampers (TMDs) are very useful when aiming to mitigate vibration-related problems. This device, once attached to a structure, considerably attenuates the effects due to dynamic loads. Although TMDs exhibit a favorable performance over one specific frequency range, structures have multiple natural frequencies, which would sometimes demand a different TMD for each frequency. However, this kind of solution would often overload the primary structure and limit TMD's damping performance. The purpose of this work is to design and model a TMD capable of damping two vibration modes of a suspension bridge’s deck. For this, the primary structure is modeled by the Finite Element Method, using ANSYS® combined with a MATLAB® routine, and applying the ``Equal Peak Design" technique to estimate the optimum damping and frequency ratio for the system. The results show the design TMD can considerably reduce the structure's vibration levels.
Keywords
tuned mass damper, Finite Element Method, Vibration control, natural frequencies, Numerical analysis
