Vibration reduction using passive absorption system with Coulomb damping

This research aims at investigating the possibility of using the Coulomb damping, mainly to lessen the vibrations of structures submitted to human loadings. The great advantage in using this type of damping is that we can easily obtain high levels of damping with values well controlled and adjusted...

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Bibliographic Details
Published in:Mechanical systems and signal processing 2005-05, Vol.19 (3), p.537-549
Main Authors: Louroza, Marcus A., Roitman, Ney, Magluta, Carlos
Format: Article
Language:English
Subjects:
Computational and experimental analysis
Coulomb damping
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Non-linear response
Passive absorption system
Physics
Solid mechanics
Structural and continuum mechanics
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
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Summary:This research aims at investigating the possibility of using the Coulomb damping, mainly to lessen the vibrations of structures submitted to human loadings. The great advantage in using this type of damping is that we can easily obtain high levels of damping with values well controlled and adjusted to the need of the project. A computational–theoretical model was developed to represent a structural system with Coulomb damping, containing two degrees of freedom. In order to calibrate this model some experimental tests were carried out with a cantilever beam. A parametric study was performed after the theoretical–computational model had been adjusted. The results indicate that the system is only applicable to some situations, and care should be taken in the design.
ISSN:0888-3270
1096-1216
DOI:10.1016/j.ymssp.2004.06.006