Detail publikace
Mechanická degradace maziva v elastohydrodynamickém kontaktu
KŘUPKA, I. HARTL, M. BAIR, S. SVOBODA, P. KUMAR, P.
Český název
Mechanická degradace maziva v elastohydrodynamickém kontaktu
Anglický název
Mechanical Degradation of the Liquid in an Operating EHL Contact
Typ
článek v časopise - ostatní, Jost
Jazyk
en
Originální abstrakt
Elastohydrodynamic lubrication (EHL) calculations using the real pressure and real shear dependence of viscosity have revealed that the shear and load dependences of film thickness are often greater than the classical prediction. Experimental measurements have confirmed the increased sensitivity to scale and load; however, the sensitivities are even greater than would be expected from shear-thinning. Time-dependent film thickness measurements and stress-history-dependent flow curves are employed to show that molecular degradation may occur at nominal rolling EHL stress levels and that this degradation affects the film thickness.
Český abstrakt
Článek shrnuje výsledky experimentálního ověření vlivu mechanické degradace maziva na tloušťku elastohydrodynamického mazacího filmu při použití newtonských i nenewtonských maziv. V důsledku opakovaného průchodu maziva kontaktem dochází k redukci tloušťky mazacího filmu. Jako jedna z možných příčin je diskutována molekulární degradace maziva.
Anglický abstrakt
Elastohydrodynamic lubrication (EHL) calculations using the real pressure and real shear dependence of viscosity have revealed that the shear and load dependences of film thickness are often greater than the classical prediction. Experimental measurements have confirmed the increased sensitivity to scale and load; however, the sensitivities are even greater than would be expected from shear-thinning. Time-dependent film thickness measurements and stress-history-dependent flow curves are employed to show that molecular degradation may occur at nominal rolling EHL stress levels and that this degradation affects the film thickness.
Klíčová slova česky
Elastohydrodynamické mazání; Tloušťka filmu; Reologie; Nenewtonské chování
Klíčová slova anglicky
EHL with non Newtonian lubricants; Rheology; Non Newtonian behavior; Lubricant degradation
Rok RIV
2010
Vydáno
05.10.2010
Nakladatel
Springer
Místo
EU
ISSN
1023-8883
Časopis
Tribology Letters
Ročník
40
Číslo
3
Strany od–do
1–7
Počet stran
7
BIBTEX
@article{BUT49899,
author="Ivan {Křupka} and Martin {Hartl} and Petr {Svoboda},
title="Mechanical Degradation of the Liquid in an Operating EHL Contact",
journal="Tribology Letters",
year="2010",
volume="40",
number="3",
month="October",
pages="1--7",
publisher="Springer",
address="EU",
issn="1023-8883"
}