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  4. Dominant damping effects in friction brake noise, vibration and harshness : the relevance of joints
 
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Dominant damping effects in friction brake noise, vibration and harshness : the relevance of joints

Citation Link: https://doi.org/10.15480/882.1582
Publikationstyp
Journal Article
Publikationsdatum
2014-06-09
Sprache
English
Author
Tiedemann, Merten 
Kruse, Sebastian 
Hoffmann, Norbert orcid-logo
Institut
Strukturdynamik M-14 
DOI
10.15480/882.1582
TORE-URI
http://tubdok.tub.tuhh.de/handle/11420/1585
Lizenz
http://rightsstatements.org/vocab/InC/1.0/
Enthalten in
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 
Volume
229 (2015)
Issue
6
Start Page
728
End Page
734
Citation
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 6 (229): 728-734 (2014)
Publisher DOI
10.1177/0954407014536378
Scopus ID
2-s2.0-84928969216
Publisher
Sage Publications
The experimental analysis of a single component of a brake system and an assembly consisting of three components is used to clarify the relevance of joints in terms of damping and non-linearity in state-of-the-art brake systems. For this purpose a series of experimental modal analyses are conducted. A comparison of the results obtained from the single component and from the assembly strongly indicate that the joints which necessarily exist in an assembled structure have a strong impact on the dynamic behaviour of the structure. The modal damping values of the jointed structure are a factor of up to 60 higher than those of the single-component values. Also, a significant amplitude dependence of the frequency response functions results. The observations demonstrate that joints are a major source of energy dissipation in friction brake systems and, in addition, that they introduce non-linear behaviour to the system which has the potential to limit squeal amplitudes. Therefore, mechanical joints in brake systems should be considered as decisive design elements for noise, vibration and harshness issues in brakes.
Schlagworte
damping
brake squeal
modelling
joints
vibration
harshness
DDC Class
620: Ingenieurwissenschaften
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