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

Marian M, Weikert T, Tremmel S (2019)

Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2019

Event location: Nashville, Tennessee US

URI: https://www.archiv.mfk.tf.fau.de?file=pubmfk_5d9e184193fe8

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.

Authors with CRIS profile

Max Marian Chair of Engineering Design Tim Weikert Chair of Engineering Design Stephan Tremmel Chair of Engineering Design

Additional Organisation(s)

Chair of Engineering Design

Related research project(s)

Tribological DLC-Coatings in Combination with Surface Texturing for Forming Tools to Increase Lifetime and to Improve Process Quality (B04) TRR 73: Manufacturing of complex functional components with variants by using a new sheet metal forming process - Sheet-Bulk Metal Forming Jan. 1, 2009 - Dec. 31, 2020

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.

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