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A pin-on-disc tribometer study of friction at low contact pressures and sliding speeds for a disc brake material combination
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).ORCID iD: 0000-0003-0696-7506
2019 (English)In: Results in Engineering, ISSN 2590-1230, Vol. 4, article id 100051Article in journal (Refereed) Published
Abstract [en]

Disc brake creep groan is a stick-slip phenomenon which results in a low frequency noise in road vehicles that could occur at low vehicle speeds and brake torques. Simulation approaches are used predict the stick-slip phenomena for disc brakes. These approaches depend on the friction model used. Tribometers can be used to map how the local coefficient of friction (CoF) depends on the contact pressure (p) and sliding speed (v). A CoF pv-map can be used as friction model in simulation approaches. There is a lack of CoF maps at low contact pressures and sliding speeds are reported in the literature. The aim of the presented study is to map the CoF for a disc brake material combination at low contact pressures (0.03–0.28 MPa) and sliding speeds (0–3.8 mm/s). The result shows that the friction decreases with increased contact pressure and sliding speed for the specific material combination tested and the test conditions used. More studies are needed to further investigate the validity of the results.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 4, article id 100051
Keywords [en]
Friction, Disc brake, Low speed, Low pressure
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Identifiers
URN: urn:nbn:se:kth:diva-263584DOI: 10.1016/j.rineng.2019.100051OAI: oai:DiVA.org:kth-263584DiVA, id: diva2:1368313
Note

QC 20191107

Available from: 2019-11-06 Created: 2019-11-06 Last updated: 2019-11-07Bibliographically approved

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Wahlström, Jens
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Tribology (Interacting Surfaces including Friction, Lubrication and Wear)

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