功能梯度材料热敏感性对制动过程中温度的影响。

Influence of Thermal Sensitivity of Functionally Graded Materials on Temperature during Braking.

作者信息

Yevtushenko Aleksander, Topczewska Katarzyna, Zamojski Przemysław

机构信息

Faculty of Mechanical Engineering, Bialystok University of Technology (BUT), 45C Wiejska Street, 15-351 Bialystok, Poland.

出版信息

Materials (Basel). 2022 Jan 26;15(3):963. doi: 10.3390/ma15030963.

DOI:10.3390/ma15030963

PMID:35160909

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8839958/

Abstract

The model of the frictional heating process during single braking to determine the temperature of the functionally graded friction elements with an account of the thermal sensitivity of materials was proposed. The basis of this model is the exact solution of the one-dimensional thermal problem of friction during braking with constant deceleration. The formulas approximating the experimental data of the temperature dependencies of properties of the functionally graded materials (FGMs) were involved in the model to improve the accuracy of the achieved results. A comparative analysis was performed for data obtained for temperature-dependent FGMs and the corresponding data, calculated without consideration of thermal sensitivity. The results revealed that the assumption of thermal stability of FGMs during braking may cause a significant overestimation of temperature of the friction pair elements.

摘要

提出了一种单次制动过程中摩擦加热过程的模型，用于确定功能梯度摩擦元件的温度，并考虑了材料的热敏感性。该模型的基础是恒减速制动过程中一维摩擦热问题的精确解。模型中引入了近似功能梯度材料（FGMs）性能温度依赖性实验数据的公式，以提高所得结果的准确性。对温度依赖型FGMs获得的数据与未考虑热敏感性计算得到的相应数据进行了对比分析。结果表明，制动过程中FGMs热稳定性的假设可能会导致摩擦副元件温度的显著高估。