Friction-induced intermittent motion affected by surface roughness of brake friction materials

S. M. Lee, M. W. Shin, Ho Jang

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The effect of the surface roughness of the brake friction material on friction-induced instability was studied. Commercial friction materials with different surface roughness levels were tested using a scale brake dynamometer to find a correlation between the surface roughness and friction oscillation. The results showed that the normal contact stiffness was strongly affected by surface roughness and played a significant role in determining the friction oscillation pattern. The friction force oscillation changed from stick-slip to sinusoidal oscillation and steady sliding as the sliding velocity increased, and the velocity ranges for different oscillatory patterns were changed by the surface roughness. A smooth surface with glazed patches produced friction oscillation with larger amplitudes, and the oscillation was maintained over a wider range of sliding velocities due to the high contact stiffness. The correlation between the contact stiffness and surface roughness suggested that friction-induced instability might be avoided by designing the friction material to have low surface stiffness.

Original languageEnglish
Pages (from-to)29-34
Number of pages6
JournalWear
Volume308
Issue number1-2
DOIs
Publication statusPublished - 2013 Nov 30

Fingerprint

Friction materials
brakes
Brakes
surface roughness
friction
Surface roughness
Friction
Stiffness
oscillations
stiffness
sliding
Stick-slip
Dynamometers
dynamometers
slip
roughness

Keywords

  • Brake/clutch materials
  • Contact mechanics
  • Stick-slip
  • Surface topography

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Mechanics of Materials

Cite this

Friction-induced intermittent motion affected by surface roughness of brake friction materials. / Lee, S. M.; Shin, M. W.; Jang, Ho.

In: Wear, Vol. 308, No. 1-2, 30.11.2013, p. 29-34.

Research output: Contribution to journalArticle

@article{afd4bbe3659e4cb6868e34f451a2cddf,
title = "Friction-induced intermittent motion affected by surface roughness of brake friction materials",
abstract = "The effect of the surface roughness of the brake friction material on friction-induced instability was studied. Commercial friction materials with different surface roughness levels were tested using a scale brake dynamometer to find a correlation between the surface roughness and friction oscillation. The results showed that the normal contact stiffness was strongly affected by surface roughness and played a significant role in determining the friction oscillation pattern. The friction force oscillation changed from stick-slip to sinusoidal oscillation and steady sliding as the sliding velocity increased, and the velocity ranges for different oscillatory patterns were changed by the surface roughness. A smooth surface with glazed patches produced friction oscillation with larger amplitudes, and the oscillation was maintained over a wider range of sliding velocities due to the high contact stiffness. The correlation between the contact stiffness and surface roughness suggested that friction-induced instability might be avoided by designing the friction material to have low surface stiffness.",
keywords = "Brake/clutch materials, Contact mechanics, Stick-slip, Surface topography",
author = "Lee, {S. M.} and Shin, {M. W.} and Ho Jang",
year = "2013",
month = "11",
day = "30",
doi = "10.1016/j.wear.2013.09.018",
language = "English",
volume = "308",
pages = "29--34",
journal = "Wear",
issn = "0043-1648",
publisher = "Elsevier BV",
number = "1-2",

}

TY - JOUR

T1 - Friction-induced intermittent motion affected by surface roughness of brake friction materials

AU - Lee, S. M.

AU - Shin, M. W.

AU - Jang, Ho

PY - 2013/11/30

Y1 - 2013/11/30

N2 - The effect of the surface roughness of the brake friction material on friction-induced instability was studied. Commercial friction materials with different surface roughness levels were tested using a scale brake dynamometer to find a correlation between the surface roughness and friction oscillation. The results showed that the normal contact stiffness was strongly affected by surface roughness and played a significant role in determining the friction oscillation pattern. The friction force oscillation changed from stick-slip to sinusoidal oscillation and steady sliding as the sliding velocity increased, and the velocity ranges for different oscillatory patterns were changed by the surface roughness. A smooth surface with glazed patches produced friction oscillation with larger amplitudes, and the oscillation was maintained over a wider range of sliding velocities due to the high contact stiffness. The correlation between the contact stiffness and surface roughness suggested that friction-induced instability might be avoided by designing the friction material to have low surface stiffness.

AB - The effect of the surface roughness of the brake friction material on friction-induced instability was studied. Commercial friction materials with different surface roughness levels were tested using a scale brake dynamometer to find a correlation between the surface roughness and friction oscillation. The results showed that the normal contact stiffness was strongly affected by surface roughness and played a significant role in determining the friction oscillation pattern. The friction force oscillation changed from stick-slip to sinusoidal oscillation and steady sliding as the sliding velocity increased, and the velocity ranges for different oscillatory patterns were changed by the surface roughness. A smooth surface with glazed patches produced friction oscillation with larger amplitudes, and the oscillation was maintained over a wider range of sliding velocities due to the high contact stiffness. The correlation between the contact stiffness and surface roughness suggested that friction-induced instability might be avoided by designing the friction material to have low surface stiffness.

KW - Brake/clutch materials

KW - Contact mechanics

KW - Stick-slip

KW - Surface topography

UR - http://www.scopus.com/inward/record.url?scp=84886507895&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84886507895&partnerID=8YFLogxK

U2 - 10.1016/j.wear.2013.09.018

DO - 10.1016/j.wear.2013.09.018

M3 - Article

VL - 308

SP - 29

EP - 34

JO - Wear

JF - Wear

SN - 0043-1648

IS - 1-2

ER -