Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Simulation of friction and wear for a low-steel brake material based on experimental pv-mapping of its basic constituents

Francesco, Varriale LU ; Davide, Carlevaris ; Yezhe, Lyu LU orcid and Jens, Wahlström LU orcid (2025) In Wear 572-573.
Abstract
The coefficient of friction (COF) and wear are critical parameters in
assessing disc brake performance. However, their study is challenging
due to their interdependence on contact pressure, sliding velocity,
temperature, and material composition. The complex contact interactions
between brake pads and discs involve the continuous formation and
destruction of mesoscopic contact plateaus, which are highly influenced
by individual pad constituents.

To address this complexity, a mesoscale cellular automaton approach has
been further developed to predict the impact of specific pad ingredients
on brake performance. This method use COF and wear pressure-velocity
maps of single pad ingredients... (More)
The coefficient of friction (COF) and wear are critical parameters in
assessing disc brake performance. However, their study is challenging
due to their interdependence on contact pressure, sliding velocity,
temperature, and material composition. The complex contact interactions
between brake pads and discs involve the continuous formation and
destruction of mesoscopic contact plateaus, which are highly influenced
by individual pad constituents.

To address this complexity, a mesoscale cellular automaton approach has
been further developed to predict the impact of specific pad ingredients
on brake performance. This method use COF and wear pressure-velocity
maps of single pad ingredients derived from pin-on-disc (POD) tests.

The findings of this study show that the simulated COF is qualitative in
line with experimental data from dyno bench tests. However, an offset
is observed between the simulated and experimental COF curves, likely
due to differences in measurement methodologies between POD and inertia
dynamometer bench tests. Additionally, the simulation provides insights
into the evolution of the contact area during braking, offering a
detailed analysis of the contribution of each raw material to its
formation. Furthermore, it delivers critical information on the contact
pressure each constituent can withstand, demonstrating, for instance,
that metal fibres experience higher contact pressure than other
ingredients, reaffirming their role as primary load carriers.

The ability to predict these parameters early in the design phase is
strategically advantageous, facilitating the development of friction pad
materials and disc brake systems that optimize cost and time efficiency
while advancing sustainability and environmental responsibility. (Less)
Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Brake performance, Cellular automaton, Coefficient of friction, Simulation, Wear
in
Wear
volume
572-573
article number
206037
pages
11 pages
publisher
Elsevier
external identifiers
  • scopus:105000535094
ISSN
0043-1648
DOI
10.1016/j.wear.2025.206037
language
English
LU publication?
yes
id
c1b5d903-2e20-42b7-a855-6bc3f4300de8
date added to LUP
2025-04-18 10:34:04
date last changed
2025-04-29 10:04:14
@article{c1b5d903-2e20-42b7-a855-6bc3f4300de8,
  abstract     = {{The coefficient of friction (COF) and wear are critical parameters in <br>
assessing disc brake performance. However, their study is challenging <br>
due to their interdependence on contact pressure, sliding velocity, <br>
temperature, and material composition. The complex contact interactions <br>
between brake pads and discs involve the continuous formation and <br>
destruction of mesoscopic contact plateaus, which are highly influenced <br>
by individual pad constituents.<br/><br/>To address this complexity, a mesoscale cellular automaton approach has <br>
been further developed to predict the impact of specific pad ingredients<br>
 on brake performance. This method use COF and wear pressure-velocity <br>
maps of single pad ingredients derived from pin-on-disc (POD) tests.<br/><br/>The findings of this study show that the simulated COF is qualitative in<br>
 line with experimental data from dyno bench tests. However, an offset <br>
is observed between the simulated and experimental COF curves, likely <br>
due to differences in measurement methodologies between POD and inertia <br>
dynamometer bench tests. Additionally, the simulation provides insights <br>
into the evolution of the contact area during braking, offering a <br>
detailed analysis of the contribution of each raw material to its <br>
formation. Furthermore, it delivers critical information on the contact <br>
pressure each constituent can withstand, demonstrating, for instance, <br>
that metal fibres experience higher contact pressure than other <br>
ingredients, reaffirming their role as primary load carriers.<br/><br/>The ability to predict these parameters early in the design phase is <br>
strategically advantageous, facilitating the development of friction pad<br>
 materials and disc brake systems that optimize cost and time efficiency<br>
 while advancing sustainability and environmental responsibility.}},
  author       = {{Francesco, Varriale and Davide, Carlevaris and Yezhe, Lyu and Jens, Wahlström}},
  issn         = {{0043-1648}},
  keywords     = {{Brake performance; Cellular automaton; Coefficient of friction; Simulation; Wear}},
  language     = {{eng}},
  month        = {{07}},
  publisher    = {{Elsevier}},
  series       = {{Wear}},
  title        = {{Simulation of friction and wear for a low-steel brake material based on experimental pv-mapping of its basic constituents}},
  url          = {{http://dx.doi.org/10.1016/j.wear.2025.206037}},
  doi          = {{10.1016/j.wear.2025.206037}},
  volume       = {{572-573}},
  year         = {{2025}},
}