Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Modeling of an impact damper submitted to forced vibration from a nonlinear contact force model
Submission Author:
Marcos Albuquerque , MG
Co-Authors:
Marcos Albuquerque, ROBSON PEDERIVA
Presenter: Marcos Albuquerque
doi://10.26678/ABCM.COBEM2017.COB17-2107
Abstract
Vibrations in mechanical systems may be undesirable and there are different ways of controlling the vibratory amplitude. Impact dampers are a passive device that utilizes an auxiliary mass(es) - particle(s) - with free movement to collide against the structure to be damped. Momentum transfer from the structure to the particle(s) is the responsible for dissipating part of the energy. Recent numerical and experimental studies have proven the efficiency of this damper. They analyse the influence of the particle mass and the clearance, necessary to the occurrence of impacts. In this work, a nonlinear modeling, based on Hertz theory, is investigated by comparing simulated and experimental responses. Results presented good agreement between simulated and experimental curves.
Keywords
Vibration, Impact Damper, Absorber, damping
