Mohammadpour et al-accepted.pdf (607.04 kB)
Effect of surface topography upon micro-impact dynamics
journal contribution
posted on 2015-10-08, 12:54 authored by Mahdi Mohammadpour, Nick MorrisNick Morris, Michael Leighton, Homer RahnejatOften the effect of interactions at nano-scale determines the tribological performance of load bearing contacts. This is particularly the case for lightly loaded conjunctions where a plethora of short range kinetic interactions occur. It is also true of larger load bearing conjunctions where boundary interactions become dominant. At the diminutive scale of fairly smooth surface topography the cumulative discrete interactions give rise to the dominance of boundary effects rather than the bulk micro-scale phenomena, based on continuum mechanics. The integration of the manifold localised discrete interactions into a continuum is the pre-requisite to the understanding of characteristic boundary effects, which transcend the physical length scales and affect the key observed system attributes. These are energy efficiency and vibration refinement. This paper strives to present such an approach. It is shown that boundary and near boundary interactions can be adequately described by surface topographical measures, as well the thermodynamic conditions.
Funding
The authors would like to acknowledge the financial support of the Engineering and Physical Sciences Research Council (EPSRC) extended to the Encyclopaedic Program Grant under which some of the research reported here was undertaken.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
Surface Topography: Metrology and PropertiesVolume
4Issue
1Citation
MOHAMMADPOUR, M. ... et al, 2016. Effect of surface topography upon micro-impact dynamics. Surface Topography: Metrology and Properties, 4(1), pp.014001.Publisher
© IOP scienceVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Acceptance date
2015-09-02Publication date
2015-11-05Copyright date
2016Notes
This is an author-created, un-copyedited version of an article accepted for publication in Surface Topography: Metrology and Properties. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/2051-672X/4/1/014001.eISSN
2051-672XPublisher version
Language
- en