applsci-09-04287.pdf (1.78 MB)
Integrated thermal and dynamic analysis of dry automotive clutch linings
journal contribution
posted on 2019-10-14, 13:00 authored by Theofilos Gkinis, Ramin RahmaniRamin Rahmani, Homer RahnejatOptimum operation of clutch systems is dictated by their dynamic as well as thermal
performance. Both of these aspects are closely related to the interfacial frictional characteristics of the
clutch lining material, which also affects the noise, vibration and harshness response of the entire
vehicular powertrain system. Severe operating conditions such as interfacial clutch slip and increased
contact pressures occur during clutch engagement, leading to generation of contact heat, and higher
clutch system temperature. Therefore, any undesired oscillatory responses, generated during clutch
engagement, such as take-up judder phenomenon can exacerbate generated heat due to stick-slip
motion. The paper presents an integrated thermal, and 9-DOF dynamic model of a rear wheel drive
light truck powertrain system. The model also includes experimentally measured clutch lining
frictional variations with interfacial slip speed, non-linear contact pressure profile and generated
surface flash temperature. It is shown that severe torsional oscillations known as take-up judder lead
to an increased overall clutch temperature. It also shows that ageing of clutch lining material alters
its dynamic and thermal performance.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
Applied SciencesVolume
9Issue
20Publisher
MDPI AGVersion
- VoR (Version of Record)
Publisher statement
This is an Open Access Article. It is published by MDPI under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/Acceptance date
2019-10-09Publication date
2019-10-12Copyright date
2019ISSN
2076-3417Publisher version
Language
- en
Depositor
Dr Ramin RahmaniArticle number
4287Usage metrics
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