TY - JOUR
T1 - Wear simulation in lubricated contacts considering wear-dependent surface topography changes
AU - Maier, Michael
AU - Pusterhofer, Michael
AU - Grün, Florian
N1 - Publisher Copyright: © 2023
PY - 2023/2/18
Y1 - 2023/2/18
N2 - Along with friction, wear in lubricated contacts is one of the most essential design criteria. The use of low-viscosity lubricants, as well as changing operating conditions, may lead to the wear-causing operating condition of mixed friction. For wear assessment, in the last decades numerical simulations have been confirmed as a powerful tool. The level of detail of the simulation model has a significant influence on the simulation results. The local wear heights for a hydrodynamic journal bearing under constant operating conditions are calculated numerically. A variant study is used to determine the influence of elastic deformation, cavitation model and the consideration of the wear-dependent surface topography. The surface topography, which is subject to change especially during running-in, is taken into account in the form of wear-dependent asperity contact pressure curves, respectively wear-dependent flow factors. To validate the simulation results, tests were carried out on a rotational tribometer. The results show that the consideration of the wear-dependent surface topography has a significant influence on the wear development and thus the trend evaluated from the experiment can be better assessed.
AB - Along with friction, wear in lubricated contacts is one of the most essential design criteria. The use of low-viscosity lubricants, as well as changing operating conditions, may lead to the wear-causing operating condition of mixed friction. For wear assessment, in the last decades numerical simulations have been confirmed as a powerful tool. The level of detail of the simulation model has a significant influence on the simulation results. The local wear heights for a hydrodynamic journal bearing under constant operating conditions are calculated numerically. A variant study is used to determine the influence of elastic deformation, cavitation model and the consideration of the wear-dependent surface topography. The surface topography, which is subject to change especially during running-in, is taken into account in the form of wear-dependent asperity contact pressure curves, respectively wear-dependent flow factors. To validate the simulation results, tests were carried out on a rotational tribometer. The results show that the consideration of the wear-dependent surface topography has a significant influence on the wear development and thus the trend evaluated from the experiment can be better assessed.
KW - Wear simulation
KW - Mixed friction
KW - Multiscale Wear
KW - Surface topography change
KW - Lubricated contact
UR - http://www.scopus.com/inward/record.url?scp=85148350344&partnerID=8YFLogxK
U2 - 10.1016/j.matpr.2023.01.424
DO - 10.1016/j.matpr.2023.01.424
M3 - Article
SN - 2214-7853
VL - 93.2023
SP - 563
EP - 570
JO - Materials Today: Proceedings
JF - Materials Today: Proceedings
IS - 4
ER -