The last decade an increasing amount of work are performed with the aim of enhancing efficiency and reliability of fluid power components. Consequently, the loss mechanisms of lubricated tribological interfaces are of particular interest. This has led to development of sophisticated three-dimensional thermo-elasto-hydrodynamic lubrication models of fluid power components. The computational efforts involved in simulation with such models entail that design optimization are to some extend impractical. However, such models are also pursued in theoretical tribology with the aim to study loss and wear mechanisms, which is very difficult to study experimentally. In consequence, advanced numerical models are the state of the art approach in theoretical fluid power tribology research. However, a downside of modern numerical models is the inability to provide a practical tool for wide-scale parameter sweep investigations, due to computational effort, whereby analytical research in loss mechanisms still have certain advantages. In this paper, the thermo-viscous effect of a lubricant is included in an analytical study of the friction and energy dissipation of oil hydraulic thin-films. This analytical study is based on an asymptotic approximation of the laminar lubrication thermal field at low reduced Peclet and Brinkman number, where viscosity is included as a function of temperature. The asymptotic series is truncated at first order and used to derive an expression of the viscous friction on a sliding surface. This reveal an influence from the surface temperature gradient on the viscous friction, which is not revealed when applying classical isothermal analysis. The significance of the thermo-viscous effect on friction and energy dissipation is analyzed analytically in order to provide a qualitative insight to the relation between thermodynamic properties, film thickness, sliding velocity and viscous friction.
Skip Nav Destination
9th FPNI Ph.D. Symposium on Fluid Power
October 26–28, 2016
Florianópolis, SC, Brazil
Conference Sponsors:
- Fluid Power Net International (FPNI)
- Federal University of Santa Catarina (UFSC), Brazil
ISBN:
978-0-7918-5047-3
PROCEEDINGS PAPER
Analysis of the Thermo-Viscous Effect on Friction and Energy Dissipation in Oil Lubricated Interfaces
Per Johansen,
Per Johansen
Aalborg University, Aalborg East, Denmark
Search for other works by this author on:
Daniel B. Roemer,
Daniel B. Roemer
Aalborg University, Aalborg East, Denmark
Search for other works by this author on:
Torben O. Andersen,
Torben O. Andersen
Aalborg University, Aalborg East, Denmark
Search for other works by this author on:
Henrik C. Pedersen
Henrik C. Pedersen
Aalborg University, Aalborg East, Denmark
Search for other works by this author on:
Per Johansen
Aalborg University, Aalborg East, Denmark
Daniel B. Roemer
Aalborg University, Aalborg East, Denmark
Torben O. Andersen
Aalborg University, Aalborg East, Denmark
Henrik C. Pedersen
Aalborg University, Aalborg East, Denmark
Paper No:
FPNI2016-1554, V001T01A034; 8 pages
Published Online:
November 30, 2016
Citation
Johansen, P, Roemer, DB, Andersen, TO, & Pedersen, HC. "Analysis of the Thermo-Viscous Effect on Friction and Energy Dissipation in Oil Lubricated Interfaces." Proceedings of the 9th FPNI Ph.D. Symposium on Fluid Power. 9th FPNI Ph.D. Symposium on Fluid Power. Florianópolis, SC, Brazil. October 26–28, 2016. V001T01A034. ASME. https://doi.org/10.1115/FPNI2016-1554
Download citation file:
21
Views
Related Proceedings Papers
Related Articles
Correlation Between Tribological and Vibration Behaviors in Sliding Lubricated Contacts
J. Tribol (November,2022)
Preparation and Structure of W/Mo Films and Their Tribological Properties in the Lubrication of MoDTC
J. Tribol (November,2017)
Related Chapters
Contact Laws
Contact in Structural Mechanics: A Weighted Residual Approach
Materials
Design and Application of the Worm Gear
ACTIS: Towards a Comprehensive Tribology Data Base
Computerization and Networking of Materials Data Bases