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Non-linear contact stiffness and dynamic contact filter for rolling contacts
KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design.ORCID iD: 0000-0002-2683-1553
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.ORCID iD: 0000-0002-9031-3662
KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design.ORCID iD: 0000-0002-3609-3005
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).ORCID iD: 0000-0002-2578-9453
2014 (English)In: FISITA 2014 World Automotive Congress - Proceedings, FISITA , 2014Conference paper, Published paper (Refereed)
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. 

Place, publisher, year, edition, pages
FISITA , 2014.
Keywords [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
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-246648Scopus ID: 2-s2.0-85060470126OAI: oai:DiVA.org:kth-246648DiVA, id: diva2:1327148
Conference
35th FISITA World Automotive Congress, 2014, 2 June 2014 through 6 June 2014
Note

QC 20190619

Available from: 2019-06-19 Created: 2019-06-19 Last updated: 2019-06-19Bibliographically approved

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Lundberg, OskarFinnveden, SvanteLopez Arteaga, InesBjörklund, Stefan

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Lundberg, OskarFinnveden, SvanteLopez Arteaga, InesBjörklund, Stefan
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VinnExcellence Center for ECO2 Vehicle designMarcus Wallenberg Laboratory MWLMachine Design (Dept.)
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