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首页> 外文期刊>Journal of thermal stresses >PROGRESSIVE WAVEVESS DISTORTION: A NEW APPROACH OF HOT SPOTTING IN DISC BRAKES
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PROGRESSIVE WAVEVESS DISTORTION: A NEW APPROACH OF HOT SPOTTING IN DISC BRAKES

机译：渐进波失真：碟刹热斑的一种新方法

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摘要

This paper deals with the mechanisms of the appearance of hot spots in railway brake disks. From infrared measurements, a classification of hot spots is presented. The most damaging thermal gradients are identified as macroscopic hot spots uniformly distributed on the friction surface. An explanation of the origin of these macroscopic hot spots is presented based on a scenario of progressive distortion of the disk. Three major effects have to be considered: the structural response of the disk and the pads; realistic boundary conditions, both geometric and loading; and the thermoelastoplastic behavior of the material. Finite element simulations based on the proposed model agree with experimental observations.
机译：本文探讨了铁路制动盘中热点出现的机理。通过红外测量，可以对热点进行分类。最具破坏性的热梯度被确定为均匀分布在摩擦表面上的宏观热点。根据磁盘逐渐变形的情况，介绍了这些宏观热点的起源。必须考虑三个主要影响：磁盘和垫的结构响应；现实的边界条件，包括几何和载荷；以及材料的热弹塑性行为。基于提出的模型的有限元模拟与实验观察结果一致。

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