Numerical and Experimental Investigation of Cooldown Period of Heavy-duty Integrated Brake Disc and Hub Pair

Abstract

In this study, the cooldown period of the integrated brake disc and hub pair, which provides weight and cost advantage compared to the traditional heavy-duty brake disc and hub pair, was investigated numerically and experimentally. In the first stage, cooldown period experiments of ventilated brake disc and wheel hub pairs on an inertia dynamometer were carried out for different vehicle speeds. In the second stage, transient thermal analyses of brake disc and hub pairs were carried out, in consideration of the boundary conditions of the cooldown period experiments performed on an inertia dynamometer. The numerical study was validated by comparing the experimental cooldown period results with the numerical results. The cooldown period was improved by 29.8 % for the integrated brake disc and hub pair compared to the conventional brake disc and hub pair. In addition, total weight reduction in brake disc and hub pair was achieved by 10 kg (15.2 %) according to the conventional design.

Keywords

• integrated brake disc and wheel hub
• ventilated brake disc
• transient thermal analysis
• inertia dynamometer
• heavy-duty vehicle

Ağır Hizmet Aracı Bütünleşik Fren Diski ve Poyra Çiftinin Soğuma Süresinin Sayısal ve Deneysel Olarak İncelenmesi

Abstract

Bu çalışmada, geleneksel ağır hizmet aracı fren diski ve poyra çiftine göre ağırlık ve maliyet avantajı sağlayan bütünleşik fren diski ve poyra çiftinin soğuma süresi sayısal ve deneysel olarak incelenmiştir. İlk aşamada, havalandırmalı fren diski ve poyra çiftlerinin atalet dinamometresi üzerinde soğuma süresi deneyleri farklı taşıt hızları için gerçekleştirilmiştir. İkinci aşamada, atalet dinamometresi üzerinde gerçekleştirilen soğuma süresi deneylerinin sınır koşulları göz önünde bulundurularak, fren diski ve poyra çiftlerinin zamana bağlı termal analizleri gerçekleştirilmiştir. Deneysel soğuma süresi sonuçları sayısal sonuçlarla karşılaştırılarak, sayısal çalışma doğrulanmıştır. Geleneksel fren diski ve poyra çiftine göre bütünleşik fren diski ve poyra çifti ile soğuma süresinde % 29,8 iyileşme elde edilmiştir. Ayrıca, geleneksel tasarıma göre fren diski ve poyra çifti toplam ağırlık indirgemesi 10 kg (%15,2) olarak elde edilmiştir.

Keywords

• bütünleşik fren diski ve tekerlek poyrası
• havalandırmalı fren diski
• zamana bağlı termal analiz
• atalet dinamometresi
• ağır hizmet taşıtı

References

1. [1] Gotowicki PF, Nigrelli V, Mariotti GV, et al., “Numerical and experimental analysis of a pegs-wing ventilated disk brake rotor, with pads and cylinders”, 10th EAEC European Automotive Congress, Serbia, 1-15, (2005).
2. [2] Stephens A, “Aerodynamic cooling of automotive disc brakes”, Master’s Thesis, RMIT University, (2006).
3. [3] Chi Z, “Thermal performance analysis and geometrical optimization of automotive brake rotors”, Doctoral Dissertation, University of Ontario Institute of Technology, (2008).
4. [4] McPhee AD, Johnson DA, “Experimental heat transfer and flow analysis of a vented brake rotor”, Int J Therm Sci, 47(4), 458–467, (2008).
5. [5] Pulugundla G, “CFD design analysis of ventilated disc brakes”, Master’s Thesis, Cranfield University of Engineering, (2008).
6. [6] Palmer E, Mishra R, Fieldhouse J, “An optimization study of a multiple-row pin-vented brake disc to promote brake cooling using computational fluid Dynamics”, Proc IMechE, Part D: J Automobile Engineering, 223(7), 865–875, (2009).
7. [7] Sarip SB, “Lightweight friction brakes for a road vehicle with regenerative braking. Design analysis and experimental investigation of the potential for mass reduction of friction brakes on a passenger car with regenerative braking”, Doctoral Dissertation, University of Bradford, (2012).
8. [8] Pevec M, Potrc I, Bombek G, et al., “Prediction of the cooling factors of a vehicle brake disc and its influence on the results of a thermal numerical simulation”, Int J Automot Technol, 13(5), 725–733, (2012).

9. [9] Raj KT, Ramsai R, Mathew J, et al., “Numerical investigation of fluid flow and heat transfer characteristics on the aerodynamics of ventilated disc brake rotor using CFD”, Therm Sci, 18(2), 667–675, (2014).
10. [10] Belhocine A, Bouchetara M, “Structural and thermal analysis of automotive disc brake rotor”, Arch Mech Eng, 61(1), 89–113, (2014).
11. [11] Belhocine A, Cho CD, Nouby M, et al., “Thermal analysis of both ventilated and full disc brake rotors with frictional heat generation”, Appl Comput Mech, 8, 5–24, (2014).
12. [12] Shinde VV, Sagar CD, Baskar P, “Thermal and structural analysis of disc brake for different cut patterns”, Int J Eng Trends Technol, 11(2), 84–87, (2014).
13. [13] Yan HB, Zhang QC, Lu TJ, “An X-type lattice cored ventilated brake disc with enhanced cooling performance”, Int J Heat Mass Transf, 80, 458–468, (2015).
14. [14] Kiran CH, “Numerical stimulation of ventilated disc cooling effect”, Int J Mech Eng Robot Res, 4(1), 257, (2015).
15. [15] Voller GP, Tirovic M, Morris R, et al., “Analysis of automotive disc brake cooling characteristics”, Proc IMechE, Part D: J Automobile Engineering, 217(8), 657–666, (2003).
16. [16] Galindo-Lopez CH, Tirovic M, “Understanding and improving the convective cooling of brake discs with radial vanes”, Proc IMechE, Part D: J Automobile Engineering, 222(7), 1211–1229, (2008).
17. [17] Mew T, “Transient thermal response of solid, pinned and highly porous ventilated brake discs”, Doctoral Dissertation, University of the Witwatersrand, Faculty of Engineering and the Built Environment, School of Civil and Environmental Engineering, (2014).
18. [18] Tang J, Bryant D, Qi HS, “Coupled CFD and FE thermal mechanical simulation of disc brake”, EuroBrake 2014, France, (2014).
19. [19] Stevens K, Tirovic M, “Heat dissipation from a stationary brake disc, part 1: analytical modelling and experimental investigations”, Proc IMechE, Part C: J Mechanical Engineering Science, 232(9), 1707–1733, (2018).
20. [20] Tirovic M, Stevens K, “Heat dissipation from a stationary brake disc, part 2: CFD modelling and experimental validations”, Proc IMechE, Part C: J Mechanical Engineering Science, 232(10), 1898– 1924, (2018).
21. [21] Güleryüz İC, Yılmaz B, “Ağır Hizmet Aracı Fren Diski Soğuma Davranışının İncelenmesi”, Gazi University Journal of Science Part C: Design and Technology, 8(4) , 936-947, (2020).
22. [22] Güleryüz İC, Karadeniz ZH, “Transient thermal analyses of an integrated brake rotor and wheel hub for heavy duty vehicles”, Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, (2021).
23. [23] Müdürlüğü, Emniyet Genel. “Karayolları trafik yönetmeliği, Ankara: Resmi Gazete (23053 Mükerrer sayılı)”, (2012).