Abstract
An integral part of the development of a disc brake system is associated with the physical test of the foundation brake using a brake dynamometer. Testing undertaken at full scale is both costly and time consuming and recent work, for example Prabhu et al. (2015), has shown that reduced scale testing is capable of replicating the tribological conditions at the interface such that the thermal response of the rotor approaches that of its full scale counterpart. The same work also demonstrated experimentally the connection between pad aspect ratio and rotor response and this had been omitted from the formal scaling methodology. This paper extends the scaling theory to reflect the presence of pad aspect ratio through the use of a validated finite element model of the reduced scale brake. The results show that for the given reduced scale brake, there exists a pad aspect ratio at which the thermal response of the rotor is at a minimum. The conclusions drawn apply equally to the behaviour of the rotor at full scale.
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Notes
- 1.
Wilwood Brake Pads, http://www.wilwood.com/Calipers/CaliperList.aspx?subname=PS1.
References
Alnaqi AA, Barton DC, Brooks PC (2014a) Reduced scale thermal characterization of automotive disc brake. Appl Therm Eng75: 658–668
Alnaqi AA, Shrestha S, Brooks PC, Barton DC (2014b) Thermal performance of PEO coated lightweight brake rotors compared with grey cast iron. Eurobrake 2014, France
Desplanques Y, Roussette O, Degallaix G, Copin R, Berthier Y (2007) Analysis of tribological behaviour of pad-disc contact in railway braking—Part 1. Laboratory test development, compromises between actual and simulated tribological triplets. Wear 262:582–591
Kermc M, Kalin M, Vizintin J, Stadler Z (2005) A reduced-scale testing machine for tribological evaluation of brake materials. Life Cycle Tribol 48: 799–806
Limpert R (1999) Brake design and safety. Society of Automotive Engineers, Troy
Newcomb TP (1959) Transient temperatures attained in disk brakes. Br J Appl Phys 10:339–340
Prabhu VS, Alnaqi AA, Brooks PC (2015) The thermal characterisation of a disc brake rotor at reduced scale with particular reference to pad aspect ratio. EuroBrake 2015, Germany
Sanders PG, Dalka TM, Basch RH (2001) A reduced-scale brake dynamometer for friction characterization. Tribol Int 34:609–615
Tsang PHS, Jacko MG, Rhee SK (1985) Comparison of chase and inertial brake dynamometer testing of automotive materials. Wear 103:217–232
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© 2016 Springer International Publishing Switzerland
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Prabhu, V.S., Alnaqi, A.A., Brooks, P.C. (2016). The Thermal Characterisation of a Disc Brake Rotor at Reduced Scale with Particular Reference to Pad Aspect Ratio. In: Andreescu, C., Clenci, A. (eds) Proceedings of the European Automotive Congress EAEC-ESFA 2015. Springer, Cham. https://doi.org/10.1007/978-3-319-27276-4_5
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DOI: https://doi.org/10.1007/978-3-319-27276-4_5
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