The characteristics of today's economy make it closely related to, and even dependent on efficient transport. For this reason a large number of transport vehicle combinations could be found on the roads, most often consisting of a tractor unit and a semi-trailer. These are large and heavy vehicles, which pose a potential threat to other road users. Therefore, it is important that their braking systems are operational and work consistently throughout the entire service life, so that the driver can stop the set he is driving quickly and efficiently at any time. Fading phenomenon is a serious threat that can reduce the effectiveness of the brakes. It occurs when the friction material sublimates and as a result a gas cushion is created that prevents direct contact of the cooperating surfaces. This manuscript is an attempt to check how the semitrailer brakes heat up during emergency braking. For this purpose, a mathematical model of the braking process was developed and simulation tests were performed for various initial speeds and various loads. The result are the temperature profiles of the friction materials that show how the drum and brake shoes heat up during braking and cool down directly after stopping.

中文翻译：

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万能半挂车的初始速度和负荷对制动系统摩擦副发热的影响

当今经济的特征使其与高效运输密切相关，甚至依赖于高效运输。因此，在道路上会发现大量的运输车辆组合，其中大多数通常由牵引车和半挂车组成。这些是大型和重型车辆，对其他道路使用者构成潜在威胁。因此，重要的是，它们的制动系统在整个使用寿命内都应运转且始终如一地工作，以便驾驶员可以随时快速高效地停止正在行驶的车辆。褪色现象是严重的威胁，会降低制动器的有效性。当摩擦材料升华时会发生这种情况，因此会形成气垫，从而阻止了配合表面的直接接触。本手稿试图检查半挂车制动在紧急制动期间如何加热。为此，开发了制动过程的数学模型，并针对各种初始速度和各种负载进行了模拟测试。结果是摩擦材料的温度曲线，表明鼓和制动蹄在制动过程中如何加热以及在停车后立即冷却。