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Non-linear contact stiffness and dynamic contact filter for rolling contacts
KTH, Skolan för teknikvetenskap (SCI), Centra, VinnExcellence Center for ECO2 Vehicle design.ORCID-id: 0000-0002-2683-1553
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, MWL Marcus Wallenberg Laboratoriet.ORCID-id: 0000-0002-9031-3662
KTH, Skolan för teknikvetenskap (SCI), Centra, VinnExcellence Center for ECO2 Vehicle design.ORCID-id: 0000-0002-3609-3005
KTH, Skolan för industriell teknik och management (ITM), Maskinkonstruktion (Inst.).ORCID-id: 0000-0002-2578-9453
2014 (engelsk)Inngår i: FISITA 2014 World Automotive Congress - Proceedings, FISITA , 2014Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Rolling contacts present in passenger cars such as in bearings and transmission elements are sources of noise and vibration, principally for interior comfort concerns. Moreover, tyre/road noise is the main source of road traffic noise which in turn leads to sleep disturbance and annoyance. In order to simulate friction losses as well as generated noise and vibrations in any rolling contact, it is crucial to have a correct description of the dynamic excitation caused by the roughness of the surfaces in contact. In this paper, a state-dependent modelling approach previously proposed by the authors is applied to a well-defined steel-steel rolling contact. A parametric study investigating the influence of rolling speed on contact conditions is performed, indicating the limits for the use of linear point force expressions for the rolling contact investigated. The state-dependent method is based on pre-calculation of contact stiffness and contact filtering as functions of vertical relative displacement. This leads to a computationally efficient way to include the influence of surface roughness and shape of the contacting bodies in a point force expression. Only vertical contact forces are studied within the scope of this work. Tangential friction forces are likely to affect the resulting vibrations and should therefore be further studied. 

sted, utgiver, år, opplag, sider
FISITA , 2014.
Emneord [en]
Contact, Rolling, Roughness, State-dependent, Vibration, Contacts (fluid mechanics), Noise pollution, Rolling resistance, Stiffness, Computationally efficient, Dynamic excitations, Noise and vibration, Non-linear contact stiffness, Relative displacement, Tangential friction force, Surface roughness
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Identifikatorer
URN: urn:nbn:se:kth:diva-246648Scopus ID: 2-s2.0-85060470126OAI: oai:DiVA.org:kth-246648DiVA, id: diva2:1327148
Konferanse
35th FISITA World Automotive Congress, 2014, 2 June 2014 through 6 June 2014
Merknad

QC 20190619

Tilgjengelig fra: 2019-06-19 Laget: 2019-06-19 Sist oppdatert: 2019-06-19bibliografisk kontrollert

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Lundberg, OskarFinnveden, SvanteLopez Arteaga, InesBjörklund, Stefan

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