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首页> 外文期刊>Mechanical systems and signal processing >Some unexpected thermal effects on squeal events observed on the experimental bench FIVE@ECL
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Some unexpected thermal effects on squeal events observed on the experimental bench FIVE@ECL

机译：关于在实验台5 @ ECL上观察到尖叫事件的一些意想不到的热效应

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摘要

The proposed study investigates the potential links between thermal effects and structural modifications of a brake system which can lead to minor modifications of the nonlinear squeal signature at temperatures lower to 100 °C. Experiments are performed on the test bench Friction-Induced Vibration and noisE at Ecole Centrale de Lyon (FIVE@ECL). The analyses are carried out on both the vibratory nonlinear responses and the acoustic noise occurring during transient and stationary squeal events.The second main contribution is to propose a detailed analysis and an in-depth methodology to demonstrate experimentally the effects of temperature increase not only on the non-linear squeal phenomenon but also on the modal behavior of a specific part of the braking system which corresponds to the brake disc. It is shown that the characteristics of the squeal signature related to the frequencies decrease or amplitude fluctuation for specific frequencies contribution can be explained in part by a relation between temperature changes and associated structural changes in the brake system.
机译：该拟议的研究研究了制动系统的热效应和结构修饰之间的潜在环节，这可能导致在低于100℃的温度下的非线性尖叫签名的微小修改。在Ecole Centrale de Lyon（五@ ECL）的测试台式摩擦诱导振动和噪声进行实验。在瞬态和固定尖叫事件期间发生的振动非线性响应和声噪声进行分析。第二主要贡献是提出详细的分析和深入的方法，以证明实验的温度不仅增加的影响非线性尖叫现象还对应于制动盘的制动系统的特定部分的模态行为。结果表明，与特定频率贡献的频率减小或幅度波动相关的尖叫签名的特性可以部分地通过温度变化和制动系统中的相关结构变化之间的关系来解释。

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