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Performance of a Non Linear Dynamic Vibration Absorbers

Published online by Cambridge University Press:  13 November 2014

F. Djemal ,
F. Chaari ,
J.-L. Dion ,
F. Renaud ,
I. Tawfiq  and
M. Haddar
F. Djemal*
Affiliation:
Laboratory of Mechanics, Modeling and Manufacturing, National School of Engineers of Sfax, Sfax, Tunisia Engineering Laboratory of Mechanical Systems and Materials, Higher Institute of Mechanics of Paris, Paris, France
F. Chaari
Affiliation:
Laboratory of Mechanics, Modeling and Manufacturing, National School of Engineers of Sfax, Sfax, Tunisia
J.-L. Dion
Affiliation:
Engineering Laboratory of Mechanical Systems and Materials, Higher Institute of Mechanics of Paris, Paris, France
F. Renaud
Affiliation:
Engineering Laboratory of Mechanical Systems and Materials, Higher Institute of Mechanics of Paris, Paris, France
I. Tawfiq
Affiliation:
Engineering Laboratory of Mechanical Systems and Materials, Higher Institute of Mechanics of Paris, Paris, France
M. Haddar
Affiliation:
Laboratory of Mechanics, Modeling and Manufacturing, National School of Engineers of Sfax, Sfax, Tunisia
*
* Corresponding author (fathidjemal@yahoo.fr)
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Abstract

The most common method of vibration control is the use of the dynamic absorbers. Two types of absorbers can be found: Linear and nonlinear. The use of linear absorbers allows reducing vibration but only at the resonance frequency, whereas nonlinear absorbers attenuate vibration on a wide band of frequency. In this paper, a nonlinear two degrees of freedom (DOF) model is developed. A cubic nonlinearity induced by a gap is considered. The objective of the paper is to characterize nonlinear vibration of the system by applying explicit formulation (EF). An experimental study is performed to validate the numerical results. The jump phenomenon is the principal nonlinear dynamic phenomenon observed on both numerical and experimental investigations.

Keywords

Frequency response functionNonlinear vibration absorberJump phenomenon
Type
Research Article
Information
Journal of Mechanics , Volume 31 , Issue 3 , June 2015 , pp. 345 - 353
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2014 

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