Adding a brake shoe temperature model into freight train longitudinal braking dynamics simulations

Autor:	Qing Wu, Matteo Magelli, Nicolò Zampieri, Esteban Bernal
Rok vydání:	2022
Předmět:	longitudinal train dynamics Mechanical Engineering brake shoe Brake temperature frictional heating coefficient of friction
Zdroj:	Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit. 237:631-641
ISSN:	2041-3017 0954-4097
DOI:	10.1177/09544097221126274
Popis:	Published research about brake shoe temperature assessments and the influences of temperature dependent brake Coefficient of friction (CoF) on train braking performance do not consider detailed train dynamics. This paper addresses this research gap by combining a brake shoe temperature model with a detailed Longitudinal Train Dynamics (LTD) model. A simplified one-dimensional (1D) Finite Element brake shoe temperature model was developed. Studies were conducted to assess brake shoe temperatures during cyclic air brakes and single-occurrence air brakes. Results show brake shoe temperatures at different positions of the train can be very different due to brake characteristics variations. During case studies, temperature dependent brake CoF increases train braking distances by 10.2 and 6.6% on down grade and flat tracks respectively. Emergency brake cases have the highest increases of brake distances by 11.3% on down grade tracks.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8b29006871b05b60d431742578c0cd4 https://doi.org/10.1177/09544097221126274 Zobrazit plný text záznamu