CREEM2020

CREEM2020

Modeling and numerical simulation of a dry friction damper based on a brake pad driven by a rod arm applied to a single-story structure

Submission Author: Rafael Cerqueira , BA
Co-Authors: Rafael Cerqueira, Marco Túlio Santana Alves
Presenter: Rafael Cerqueira

doi://10.26678/ABCM.CREEM2020.CRE2020-0026

 

Abstract

This article presents a simple procedure for predicting time-domain vibrational behaviors of a single-story structure equiped with dry friction damper. This damper is composed by a diagonal rod arm whose its pivot is connected to platform and a brake pad is attached at the free end. The model is obtained from Newtonian mechanics considering the Coulomb damping to govern the dissipative force action. The nonlinear differential equation of motion is solved numerically by using the Runge-Kutta’s method built in Scilab. Both free and forced vibration responses were simulated, considering several values for the rod arm angle and coefficient of friction. The results, for both vibration amplitude and dissipated power, revealed that for higher values of rod arm angle and coefficient of friction the performance of dry friction damper increase significantly.

Keywords

dry friction damper, coulomb damping, Passive Vibration Control, Numerical Methods, single-story structure

 

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