Friction Coefficient Characteristics of Typical Subway Brake Shoes and Brake Pads in Service

Abstract Brake pads and brake shoes are the main components of the friction pair of the subway air brake. At present, the average coefficient of friction is usually used as a criterion for evaluating the braking effect of pads and shoes. In this paper, by analyzing the braking process of the subway,...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 2542; no. 1; pp. 12007 - 12012
Main Authors Guo, Ziheng, Zuo, Jianyong, Ding, Jingxian, Wang, Xueping
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.07.2023
Subjects
Brake shoes
Braking
Coefficient of friction
Equivalence
Low speed
Physics
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Summary:Abstract Brake pads and brake shoes are the main components of the friction pair of the subway air brake. At present, the average coefficient of friction is usually used as a criterion for evaluating the braking effect of pads and shoes. In this paper, by analyzing the braking process of the subway, it is inferred that the average friction coefficient has a poor evaluation effect under the low-speed common braking conditions, and a new alternative evaluation index, the equivalent average friction coefficient at low speed, is proposed. The conjecture is verified by the test bench test, and the feasibility of the low-speed equivalent average friction coefficient as an evaluation index under low-speed conditions is proved.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2542/1/012007