中文摘要：

摩擦副表面的局部高温区会引起车辆离合器失效，基于热弹性不稳定性（TED理论，通过理论建模与分析的方法，得到系统稳定性的判断标准：临界速度及其变化规律，以及系统扰动的迁移速度．通过对摩擦片与钢片的Peclet数分析，发现局部向于出现在对偶钢片．通过对比临界速度，发现钢片呈现反对称变形．采用较小弹性模量或者较大导热系数的摩擦材料，有助于提高系统稳定性，摩擦材料的热膨胀系数对稳定性影响较小．

英文摘要：

Hot spots can lead to a failure of vehicular clutches. A theoretical model was constructed to investigate thermoelastic instability （TED and hot spots in automotive clutches. When the sliding speed exceeds the critical speed, a spatially temperature perturbation growing with time can lead to hot spots. Hot spots appear mainly on the mating disk because of its high Peclet number. Mating disk has an anti-symmetric deformation due to the critical speed. A material with low elastic modulus and high thermal conductivity can experience a high critical speed, while the thermal expansion coefficient has little e{fect on it.