Abstract

The brake system of an automobile is composed of disc brake and pad which are co-working components in braking and accelerating. In the braking period, due to friction between the surface of the disc and pad, the thermal heat is generated. It should be avoided to reach elevated temperatures in disc and pad. It is focused on different disc materials that are gray cast iron and carbon ceramics, whereas pad is made up of a composite material. In this study, the CFD model of the brake system is analyzed to get a realistic approach in the amount of transferred heat. The amount of produced heat can be affected by some parameters such as velocity and friction coefficient. The results show that surface temperature for carbon-ceramic disc material can change between 290 and 650 K according to the friction coefficient and velocity in transient mode. Also, if the disc material gray cast iron is selected, it can change between 295 and 500 K. It is claimed that the amount of dissipated heat depends on the different heat transfer coefficient of gray cast iron and carbon ceramics.

中文翻译：

---

汽车盘式制动器和制动衬块热行为的三维CFD建模

摘要

汽车的制动系统由盘式制动器和衬块组成，它们在制动和加速中共同作用。在制动期间，由于盘的表面和衬块之间的摩擦，会产生热能。应避免使阀瓣和垫片的温度升高。它专注于灰铸铁和碳陶瓷的不同碟片材料，而刹车垫则由复合材料制成。在这项研究中，对制动系统的CFD模型进行了分析，从而获得了传递热量的现实方法。产生的热量可能受某些参数（例如速度和摩擦系数）的影响。结果表明，碳陶瓷圆盘材料的表面温度可以根据瞬态模式下的摩擦系数和速度在290 K至650 K之间变化。也，