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    A numerical investigation of hot spotting origin of ventilated disc brakes

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    Publication date
    2015
    Author
    Tang, Jinghan
    Bryant, David
    Qi, Hong Sheng
    Keyword
    Finite element method, Ventilated disc brake, Hot spots, Thermal elastic instability, Progressive waviness distortions
    Peer-Reviewed
    yes
    
    Metadata
    Show full item record
    Abstract
    Hot spots are high thermal gradients on the disc surface during brake events which can cause the undesired phenomena of thermal judder and drone. The origin of hot spotting has been presented by various theories such as Thermo elastic instability (TEI) and progressive waviness distortions (PWD). However, majority of the numerical models based on these theories mainly concentrated on solid disc rather than ventilated disc which is the most commonly used nowadays. According to the experimental work done by the authors, disc geometry factors such as vents and pins also have correlations with hot spot distribution; these phenomena are difficult to be predicted analytically. Thus a convenient 2D asymmetric finite element simulation has been performed in order to obtain the correlations observed in experiments. Further parameter studies investigated factors such as uneven initial temperature, vents, pins and pad length. The results have been correlated with the experimental data and demonstrate the contribution of geometric factors in the generation of hot spots and hot judder.
    URI
    http://hdl.handle.net/10454/8020
    Version
    No full-text available in the repository
    Citation
    Tang J, Bryant D and Qi HS (2015) EuroBrake 2015, Dresden Germany, 4-6 May 2015, EuroBrake 2015 Conference Proceedings. FISITA. ISBN:978-0-9572076-6-0
    Link to publisher’s version
    http://2015.eurobrake.net/programme/technical-programme/EB2015-NVH-009
    Type
    Conference paper
    Collections
    Engineering and Informatics Publications

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