Numerical and experimental study of the relationship between friction area and temperature of aluminium-based brake disc

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-01-31 DOI:10.1177/13506501241229501

Youjie Chen, Manqi Yao, Junying Yang, R. Fu, Linlin Su, Fei Gao

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Abstract

Clarifying the relationship between friction area and brake disc temperature is helpful to optimizing the brake pad structure. Aluminium-based brake disc temperature paired with circular friction blocks of different diameters (45, 60, and 65 mm) is obtained by the TM-I-type reduced-scale inertial braking dynamometer at braking speeds 60–160 km/h and braking force 1.66 kN. On the basis, the thermo-mechanical coupling model of friction pair is established to simulate the evolution of brake disc temperature by ADINA finite-element software, and the thermal energy gradient factor is proposed. Results indicate that the numerical brake disc temperature agrees with the measured, validating the numerical model. The friction area caused the difference of braking pressure, which affects the brake disc temperature. The decrease in the friction area accelerates the disc temperature rise and increases the area ratio of high-temperature zone and maximum temperature difference. The influence degree of friction area on the brake disc temperature varies with friction zone. The thermal energy gradient factor can effectively predict the distribution of temperature gradient on the disc surface.

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铝基制动盘摩擦面积与温度关系的数值和实验研究

明确摩擦面积与制动盘温度之间的关系有助于优化制动片结构。在制动速度为 60-160 km/h、制动力为 1.66 kN 的条件下，通过 TM-I 型缩小比例惯性制动测功机获得了铝基制动盘与不同直径（45、60 和 65 mm）的圆形摩擦片的配对温度。在此基础上，建立了摩擦副的热机械耦合模型，利用 ADINA 有限元软件模拟制动盘温度的演变，并提出了热能梯度系数。结果表明，数值制动盘温度与实测值一致，验证了数值模型的有效性。摩擦面积导致制动压力不同，从而影响制动盘温度。摩擦面积的减小加速了制动盘温度的升高，增加了高温区的面积比和最大温差。摩擦面积对制动盘温度的影响程度因摩擦区域而异。热能梯度系数可有效预测制动盘表面的温度梯度分布。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.