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@article{Restrepo:2019:10.1016/j.triboint.2019.05.008,
author = {Restrepo, SE and van, Eijk MCP and Ewen, JP},
doi = {10.1016/j.triboint.2019.05.008},
journal = {Tribology International},
pages = {420--432},
title = {Behaviour of n-alkanes confined between iron oxide surfaces at high pressure and shear rate: A nonequilibrium molecular dynamics study},
url = {http://dx.doi.org/10.1016/j.triboint.2019.05.008},
volume = {137},
year = {2019}
}
TY - JOUR
AB - The behaviour of n-alkanes confined and sheared between iron oxide surfaces has been studied using nonequilibrium molecular dynamics simulations. The molecular extension, orientation, film structure, flow, and friction have been investigated for a range of n-alkane chain lengths under conditions representative of the elastohydrodynamic lubrication regime. At high pressure, the molecules show strong layering and long-range order, suggesting solid-like films. Conversely, high shear rates result in less elongated, layered, and ordered molecules; indicating more liquid-like films. Although Couette flow is usually observed for short n-alkanes, the flow is often non-linear for long n-alkanes. The friction coefficient increases logarithmically with shear rate, but the slope decreases with increasing pressure such that it becomes insensitive to shear rate for long n-alkanes.
AU - Restrepo,SE
AU - van,Eijk MCP
AU - Ewen,JP
DO - 10.1016/j.triboint.2019.05.008
EP - 432
PY - 2019///
SN - 0301-679X
SP - 420
TI - Behaviour of n-alkanes confined between iron oxide surfaces at high pressure and shear rate: A nonequilibrium molecular dynamics study
T2 - Tribology International
UR - http://dx.doi.org/10.1016/j.triboint.2019.05.008
UR - http://hdl.handle.net/10044/1/70173
VL - 137
ER -