An Experimental Investigation of Frictionally-Excited Thermoelastic Instability in Automotive Disk Brakes Under a Drag Brake Application
An Experimental Investigation of Frictionally-Excited Thermoelastic Instability in Automotive Disk Brakes Under a Drag Brake Application
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DOI：
10.1115/1.2928855
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发表时间：
1994-07
影响因子：
2.5
通讯作者：
Kwangjin Lee;J. Barber
中科院分区：
文献类型：
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作者：
Kwangjin Lee;J. Barber
对汽车盘式制动系统在阻力制动工况下的热弹性不稳定性进行了实验研究。不稳定性的开始是明确的，通过观察使用嵌入式热电偶测量的温度的不均匀性。在温度/速度空间中建立稳定性边界，临界温度归因于制动衬块材料特性的温度依赖性。同时还发现，所产生的不稳定扰动或特征函数的形式随滑动速度和温度的变化而变化。
Thermoelastic instability in an automotive disk brake system is investigated exper imentally under drag braking conditions. The onset of instability is clearly identifiable through the observation of nonuniformities in temperature measured using embed ded thermocouples. A stability boundary is established in temperature/speed space, the critical temperature being attributable to temperature-dependence of the brake pad material properties. It is also found that the form of the resulting unstable perturbations or eigenfunctions changes depending upon the sliding speed and tem perature.