Numerical and Experimental Studies on Friction Reduction by Surface Modification in TEHL Contacts

Conference contribution
(Conference Contribution)


Publication Details

Author(s): Marian M, Weikert T, Tremmel S
Publication year: 2019
Language: English


Abstract

With the aim of improved energy efficiency of engine components, it is crucial to understand the underlying mechanisms of surface
modification approaches, such as applying tribological coatings or microtextures.
Within this contribution, TEHL simulations of the cam/tappet contact with modified
surfaces are performed. Input data, like material and fluid parameters, geometries
and load cases, are chosen according to the setup of a component test-rig, on
which experimental tests are carried out to support the numerical findings. In
particular, variants of amorphous carbon coatings and microtextures fabricated
by laser ablation are investigated. Obtained insights indicate that coatings can
reduce solid and fluid friction in all lubrication regimes. This corresponds to
a shift of the Stribeck curve to
the lower left. Conversely, microtexturing may reduce the fraction of solid
friction while increasing fluid friction. This in turn resembles to a
counterclockwise tilt of the Stribeck
curve.


FAU Authors / FAU Editors

Marian, Max
Lehrstuhl für Konstruktionstechnik
Tremmel, Stephan Dr.-Ing.
Lehrstuhl für Konstruktionstechnik
Weikert, Tim
Lehrstuhl für Konstruktionstechnik


Additional Organisation
Lehrstuhl für Konstruktionstechnik


Research Fields

Tribologische PVD-/PACVD-Schichten
Lehrstuhl für Konstruktionstechnik
Wälzlagertechnik
Lehrstuhl für Konstruktionstechnik


How to cite

APA:
Marian, M., Weikert, T., & Tremmel, S. (2019). Numerical and Experimental Studies on Friction Reduction by Surface Modification in TEHL Contacts. In Proceedings of the 74th STLE Annual Meeting & Exhibition. Nashville, Tennessee, US.

MLA:
Marian, Max, Tim Weikert, and Stephan Tremmel. "Numerical and Experimental Studies on Friction Reduction by Surface Modification in TEHL Contacts." Proceedings of the 74th STLE Annual Meeting & Exhibition, Nashville, Tennessee 2019.

BibTeX: 

Last updated on 2019-12-07 at 12:27