Thermal Modelling of a Disc Brake System at Different Vehicle Weights and Constant Speeds

Year 2021, Volume: 5 Issue: 4, 351 - 357, 31.12.2021

Mehmet Akif Kunt

https://doi.org/10.30939/ijastech..1006445

Abstract

In this study, three-dimensional thermal modelling has been made for a disc brake mechanism of an automobile by using the COMSOL Multiphysics programme. Frictional heat has been calculated by means of multibody dynamic module, and heat distribution has been calculated by means of heat transfer module. In such model, an automobile with an initial speed of 25 m⁄s and 35 m⁄s has been decelerated by -10 m⁄s^2 braking speed, and the braking state has been realised at time interval of 2-4 s. Thermal analysis has been made for two different vehicle weights (1200 kg-1500 kg) under the same braking scenario. The results obtained from the thermal analysis have shown similarity to various studies carried out within the literature. An increase of 300 kg in vehicle weight has resulted in a temperature increase by 3.33% during motion at 25 m⁄s vehicle speed, and by 6.03% during motion at 35 m⁄s vehicle speed. According to temporal temperature change, maximum pad temperature has been obtained at the 4th second; and in the case that the vehicle with a weight of 1500 kg and moving at 35 m⁄s speed has braked, maximum pad temperature has been obtained as 450 K.

Keywords

Brake system, COMSOL Multiphysics, disc brake, thermal analysis.

References

• [1] Söderberg A, Andersson S. Simulation of wear and contact pressure distribution at the pad-to rotor interface in a disc brake using general purpose finite element analysis software. Wear. 2009; 267: 2243-2251.
• [2] Mahmoudi T, Parvizi A, Poursaidi E, Rahi A. Thermo-mechanical analysis of functionally graded wheel-mounted brake disc. Journal of Mechanical Science and Technology. 2015; 29: 1-8.
• [3] Altıparmak D, Koca A. Taşıtlarda tekerlek kilitlen-mesi ve kaymasının durma mesafesi ve kararlılığa etkisi. Teknoloji. 2001; 1: 47-58.
• [4] Oppenheimer P. Comparing Stopping Capabilitiy of Cars with and without Antilock Braking Systems (ABS). SAE Technical Paper. 1988- 880324.
• [5] Düzgün M, Altıparmak D, Bayrakçeken, H. An exper-imental investigation of stopping distance of automobiles. G.U. Journal of Science. 2005; 18: 153-165.
• [6] Hosseinlou MH, Ahadi H, Hematian V. A study of the minimum safe stopping distance between vehicles in terms of braking systems, weather and pavement conditions. Indi-an Journal of Science and Technology. 2012; 5: 10.
• [7] Bayrakçeken H, Altıparmak D. Design of a brake test equipment and brake force measurement and modelling. J. Fac. Eng. Arch. Gazi Univ. 2007; 22: 21-26.
• [8] Erdem M, Altıparmak D. Fren disk sıcaklığının fren-leme performansına etkisi. Gazi Üniv. Müh. Mim. Fak. Dergisi. 2014; 29(2): 425-432.
• [9] Valvano T, Lee K. An analytical method to predict thermal distortion of brake rotor. SAE Technical Paper. 2000-01-0445.
• [10] Qi, HS, Day AJ. Investigation of disc/pad interface temperatures in friction braking. Wear. 2007; 262: 505-513.
• [11] Lee K. Numerical prediction of brake fluid tempera-ture rise during braking and heat soaking. SAE Tecnical Paper. 1999-01-0483.
• [12] Aleksendric D, Barton DC, Vasic B. Prediction of brake friction materials recovery performance using artifi-cial neural networks. Tribology International. 2010; 43: 2092-2099.
• [13] Wolff A. A Method to achieve comparable thermal states of car brakes during braking on the road and on a high-speed roll-stand. The Archives of Transport. 2010; 22(2): 261-273.
• [14] Zhu ZC, Peng,YX, Shi ZY, Chen GA. Three-dimensional transient temperature field of brake shoe dur-ing hoist’s emergency braking. Applied Thermal Engineer-ing, 2009; 29: 932-937.
• [15] Yevtushenko AA, Grzes P. Axisymmetric FEA of temperature in a pad/disc brake system at temperature –dependent coefficients of friction and wear. International Communications in Heat and Mass Transfer. 2012; 39: 1045-1053.
• [16] Yevtushenko AA, Adamowicz A, Grzes P. Three-dimensional FE model for the calculation of temperature of a disc brake at temperature-dependent coefficients of fric-tion. International Communications in Heat and Mass Transfer. 2013; 42: 18-24.
• [17] Yevtushenko AA, Grzes P. Mutual influence of the velocity and temperature in the axisymmetric FE model of a disc brake. International Communications in Heat and Mass Transfer. 2014; 57: 341-346.
• [18] Yevtushenko AA, Grzes P. 3D FE model of frictional heating and wear with a mutual influence of the sliding ve-locity and temperature in a disc brake. International Com-munications in Heat and Mass Transfer. 2015; 62: 37-44.
• [19] Singh H, Shergill H. Thermal analysis of disc brake using Comsol. Int. J. Emerg. Technol. 2012; 3: 84–88.
• [20] Naji M, Masoud S. Transient thermal behavior of a cylindrical brake system. Heat Mass Trans. 2000; 36: 45–49.
• [21] Belhocine A, Rahim A, Bakar A, Bouchetara M. Thermal and structural analysis of disc brake assembly dur-ing single stop braking event. Aust. J. Mech. Eng. 2016; 4846: 1–13.