Aiming at accurately quantifying the failure probability of temperature fields for wet friction components, a macro-micro friction contact model, with the interaction of thermal-mechanical coupling simulation and single asperity contact model, was established to acquire temperature, and a statistical model for temperature field failure probability was constructed. The method utilized kernel density estimation to establish the probability density function of failure parameters and emploied Monte Carlo simulation for probability calculation. Experimental results show high agreement between simulation data and test data. The established statistical model may effectively and accurately calculate the failure probability of wet friction components.
通过宏微观摩擦接触模型构建湿式摩擦元件温度场失效概率统计模型(temperature-field failure probability model, TFPM)。以转速、压力、温度和滑摩时间为失效特征参数构建极限状态函数,通过蒙特卡罗模拟计算得到摩擦界面的失效概率,并通过试验数据验证TFPM的准确性。该模型的结构如图7所示。
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