Detail publikačního výsledku

Surface Roughness Effects in Thermal EHL Contacts

ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

Originální název

Surface Roughness Effects in Thermal EHL Contacts

Anglický název

Surface Roughness Effects in Thermal EHL Contacts

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Systematic study of a low-amplitude surface roughness passing through a rolling elastohydrodynamic contact has led to general model called amplitude attenuation theory. Under pure rolling the conditions in contact inlet controls the amplitude attenuation. Whereas, the situation in rolling-sliding contact is more complex, not only inlet but also conditions inside the contact are important to explain roughness behaviour. It was found that under high speeds and high sliding conditions thermal effects like inlet shear heating, viscosity wedge effects and others are significant. They influence conditions in the contact inlet and inside contact so that, it leads to change in film thickness distribution and pressure field. In this study, high speed high sliding conditions were applied to study a role of thermal effects on roughness behaviour. The results are compared with current state of knowledge in the field of amplitude attenuation principle.

Anglický abstrakt

Systematic study of a low-amplitude surface roughness passing through a rolling elastohydrodynamic contact has led to general model called amplitude attenuation theory. Under pure rolling the conditions in contact inlet controls the amplitude attenuation. Whereas, the situation in rolling-sliding contact is more complex, not only inlet but also conditions inside the contact are important to explain roughness behaviour. It was found that under high speeds and high sliding conditions thermal effects like inlet shear heating, viscosity wedge effects and others are significant. They influence conditions in the contact inlet and inside contact so that, it leads to change in film thickness distribution and pressure field. In this study, high speed high sliding conditions were applied to study a role of thermal effects on roughness behaviour. The results are compared with current state of knowledge in the field of amplitude attenuation principle.

Klíčová slova

lubricated point contact; roughness deformation. lubricant rheology

Klíčová slova v angličtině

lubricated point contact; roughness deformation. lubricant rheology

Autoři

ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

Rok RIV

2014

Vydáno

08.09.2013

Nakladatel

Politecnico di Torino (DIMEAS)

Místo

Torino

ISBN

9781634393522

Kniha

Proceedings of the 5th World Tribology Congress

Edice

2

Strany od

1686

Strany do

1688

Strany počet

3

Plný text v Digitální knihovně

http://hdl.handle.net/

BibTex

@inproceedings{BUT106978,
  author="Petr {Šperka} and Ivan {Křupka} and Martin {Hartl}",
  title="Surface Roughness Effects in Thermal EHL Contacts",
  booktitle="Proceedings of the 5th World Tribology Congress",
  year="2013",
  series="2",
  number="1",
  pages="1686--1688",
  publisher="Politecnico di Torino (DIMEAS)",
  address="Torino",
  isbn="9781634393522"
}