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Modelling and characterization of nonlinearities in a tuned mass damper-impulse hammer versus shaker excitation
Sandvik Teeness AS, Ranheimsveien 127, Trondheim, Norway.
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. Sandvik Coromant AB, Sandviken, Sweden.
2016 (English)In: Proceedings of ISMA 2016 - International Conference on Noise and Vibration Engineering and USD2016 - International Conference on Uncertainty in Structural Dynamics / [ed] Sas P.,Moens D.,van de Walle A., KU Leuven, Departement Werktuigkunde , 2016, 3711-3719 p.Conference paper, Published paper (Refereed)
Abstract [en]

The rubber springs of a tuned mass damper (TMD) exhibit both nonlinear stiffness and damping, which complicates measurements of the frequency response function (FRF) of the device. In this paper we model and compare the frequency responses measured with both impulse hammer excitation and a shaker base excitation method. Since the impulse response will spend only a short time in the nonlinear regime, a reasonable assumption is that the nonlinearities will be less apparent and more difficult to determine. The results show that this is not the case and that both methods yield similar nonlinear parameters. By comparing responses at different excitation levels with appropriate nonlinear models, the nonlinearities can be determined. The results indicate that these approximations of the nonlinear effects are able to describe the dynamic behaviour of the TMD, and that the nonlinear properties of the material differ somewhat in the two measurement situations.

Place, publisher, year, edition, pages
KU Leuven, Departement Werktuigkunde , 2016. 3711-3719 p.
Keyword [en]
Acoustic devices; Frequency response; Hammers; Impulse response; Nonlinear analysis; Rubber products; Structural dynamics, Base excitation methods; Dynamic behaviours; Frequency response functions; Non-linear parameters; Non-linear regimes; Non-linear stiffness; Nonlinear properties; Tuned mass dampers, Nonlinear optics
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-10935Scopus ID: 2-s2.0-85018187141OAI: oai:DiVA.org:hv-10935DiVA: diva2:1095464
Conference
27th International Conference on Noise and Vibration Engineering, ISMA 2016 and International Conference on Uncertainty in Structural Dynamics, USD2016; Leuven; Belgium; 19 September 2016 through 21 September 2016
Available from: 2017-05-15 Created: 2017-05-15 Last updated: 2017-05-15Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • ieee
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  • Other style
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Language
  • de-DE
  • en-GB
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  • nn-NB
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