Journal
TRIBOLOGY INTERNATIONAL
Volume 189, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2023.108944
Keywords
Brake pads; Friction instability; Contact plateaus; Stick-slip
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This study investigates the stick-slip phenomena at a low-velocity range and explores the effect of brake pad size on friction instability. The results show that smaller pads exhibit higher stick-slip amplitudes within narrower velocity ranges. Friction levels are influenced by the total contact plateau area, while the stick-slip amplitudes are affected by the size of high-pressure plateaus. The pronounced stick-slip with small pads is attributed to the presence of large high-pressure plateaus, which increase static friction.
Stick-slip phenomena at a low-velocity range are investigated to study the effect of brake pad size on friction instability, focusing on the contact plateaus on the pad. The friction test is performed using commercial brake pads in three different sizes. The results show that smaller pads produce higher stick-slip amplitudes within narrower velocity ranges. Friction levels are influenced by the total contact plateau area, whereas the stick-slip amplitude was affected by the size of high-pressure plateaus. The pronounced stick-slip with small pads is attributed to the large high-pressure plateaus that increase the static friction further with stick time, indicating that a smaller brake assembly could lead to a high propensity of friction-induced noise and vibrations.
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