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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.
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avdelningen för avverkande och additativa tillverkningsprocesser (AAT). Sandvik Coromant AB, Sandviken, Sweden. (PTW)
2016 (Engelska)Ingår i: 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, s. 3711-3719Konferensbidrag, Publicerat paper (Refereegranskat)
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.

Ort, förlag, år, upplaga, sidor
KU Leuven, Departement Werktuigkunde , 2016. s. 3711-3719
Nyckelord [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
Nationell ämneskategori
Bearbetnings-, yt- och fogningsteknik
Forskningsämne
TEKNIK, Produktions- och materialteknik
Identifikatorer
URN: urn:nbn:se:hv:diva-10935Scopus ID: 2-s2.0-85018187141ISBN: 9789073802940 (digital)OAI: oai:DiVA.org:hv-10935DiVA, id: diva2:1095464
Konferens
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
Tillgänglig från: 2017-05-15 Skapad: 2017-05-15 Senast uppdaterad: 2018-09-17Bibliografiskt granskad

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Magnevall, Martin

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