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Understanding Friction in Cam-Tappet Contacts : An Application-Oriented Time-Dependent Simulation Approach Considering Surface Asperities and Edge Effects

Titelangaben

Orgeldinger, Christian ; Tremmel, Stephan:
Understanding Friction in Cam-Tappet Contacts : An Application-Oriented Time-Dependent Simulation Approach Considering Surface Asperities and Edge Effects.
In: Lubricants. Bd. 9 (2021) Heft 11 . - No. 106.
ISSN 2075-4442
DOI: https://doi.org/10.3390/lubricants9110106

Volltext

Link zum Volltext (externe URL): Volltext

Angaben zu Projekten

Projekttitel:
Offizieller Projekttitel
Projekt-ID
Priority Program “Resource-efficient construction elements”
SPP 1551
Open Access Publizieren
Ohne Angabe

Projektfinanzierung: Deutsche Forschungsgemeinschaft

Abstract

With the increasing challenges of climate change and scarce resources, the development of sustainable and energy-efficient technical systems is becoming increasingly important. In many applications, the friction losses occurring in contacts have a decisive influence on the overall efficiency. At this point, tribological contact optimization can make an important contribution to increasing the efficiency of technical systems. However, improvements are often associated with a considerable experimental effort. To reduce the development time, additional simulation models can be applied to predict the tribological behavior. This requires the closest possible approximation of the real contact within a numerical model. This paper presents a simulation approach for the time-dependent simulation of a cam–tappet contact. The simulation uses realistic operating conditions as they arise in the valve train of internal combustion engines. The influence of edge effects on the friction behavior is considered by a scaled calculation area and the influence of the surface roughness is investigated using stochastic asperity models. It is shown that the tribological behavior within the contact strongly depends on the surface properties and the load spectrum used. In addition, edge effects on the sides of the contact area have a clear influence on the pressure and film thickness distribution.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: tribology; EHL simulation; elastohydrodynamic lubrication; cam/tappet contact; finite element method; friction mechanisms; system efficiency
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften > Ehemalige Professoren > Lehrstuhl Konstruktionslehre/CAD - Univ.-Prof. Dr.-Ing. Frank Rieg
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Konstruktionslehre/CAD > Lehrstuhl Konstruktionslehre/CAD - Univ.-Prof. Dr.-Ing. Stephan Tremmel
Fakultäten
Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Ehemalige Professoren
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Konstruktionslehre/CAD
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 28 Okt 2021 08:55
Letzte Änderung: 05 Dec 2022 13:08
URI: https://eref.uni-bayreuth.de/id/eprint/67536