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由于热量集中于制动盘的表面造成热弹不稳定性(TEI)而引起热变形。这样可能发生大家知道的低频强烈振动。因为在盘和衬块的接触面间的摩擦系数变化,在摩擦衬块发生尖叫声。通过对热聚集和尖叫现象的联合分析,对高热和机械特性可设计一最佳的盘和摩擦衬块。本文同时考虑了热和机械不稳定性按照盘的厚度,卡钳的加压方式,衬片弧长进行了数值和实验分析。采用有限元分析法(FEA)计算了热变形和压力分布。采用汽车底盘测功器和高速红外摄像仪进行实验评估TEI性能,结果用FEA修正。采用FEA估计机械不稳定性进行复杂固有值分析,按照转子和摩擦衬盘的形状对于一固有值问题应用修正仿真结果分析接合形式。在热聚集和尖叫问题期间,讨论因考虑盘制动器性能盘和摩擦衬块的设计。
Thermal deformation is caused by heat concentration on the surface of the brake disc causing thermal spring instability (TEI). This can happen with the low frequency, strong vibration known to everyone. Because of the change in the coefficient of friction between the contact surfaces of the disk and the pad, screams occur on the pad. Through a combined analysis of thermal build-up and screaming, an optimal disk and pad can be designed for high thermal and mechanical properties. In this paper, both thermal and mechanical instability are considered in numerical and experimental analysis according to the thickness of the disc, the caliper pressurization method and the lining arc length. Finite element analysis (FEA) was used to calculate the thermal deformation and pressure distribution. TEI performance was evaluated experimentally using a car chassis dynamometer and a high-speed infrared camera and the results were corrected with FEA. The FEA was used to estimate the mechanical instability and complex inherent value analysis (FEA). The modified simulation results were used to analyze the joint form according to the shape of the rotor and the friction disk for an inherent value problem. During thermal build-up and screaming issues, the discussion considers the design of the disc brake pad and pad.