Designing nanoindentation simulation studies by appropriate indenter choices: Case study on single crystal tungsten

Simple item page
dc.contributor.authorGoel, Saurav
dc.contributor.authorCross, Graham
dc.contributor.authorStukowski, Alexander
dc.contributor.authorGamsjäger, Ernst
dc.contributor.authorBeake, Ben D.
dc.contributor.authorAgrawal, Anupam
dc.date.accessioned2018-06-22T10:53:13Z
dc.date.available2018-06-22T10:53:13Z
dc.date.issued2018-06-22
dc.description.abstractAtomic simulations are widely used to study the mechanics of small contacts for many contact loading processes such as nanometric cutting, nanoindentation, polishing, grinding and nanoimpact. A common assumption in most such studies is the idealisation of the impacting material (indenter or tool) as a perfectly rigid body. In this study, we explore this idealisation and show that active chemical interactions between two contacting asperities lead to significant deviations of atomic scale contact mechanics from predictions by classical continuum mechanics. We performed a testbed study by simulating velocity-controlled, fixed displacement nanoindentation on single crystal tungsten using five types of indenter (i) a rigid diamond indenter (DI) with full interactions, (ii) a rigid indenter comprising of the atoms of the same material as that of the substrate i.e. tungsten atoms (TI), (iii) a rigid diamond indenter with pairwise attraction turned off, (iv) a deformable diamond indenter and (v) an imaginary, ideally smooth, spherical, rigid and purely repulsive indenter (RI). Corroborating the published experimental data, the simulation results provide a useful guideline for selecting the right kind of indenter for atomic scale simulations.en_UK
dc.identifier.citationGoel S, Cross G, Stukowski A, et al., (2018) Designing nanoindentation simulation studies by appropriate indenter choices: case study on single crystal tungsten, Computational Materials Science, Volume 152, September 2018, pp. 196-210en_UK
dc.identifier.issn0927-0256
dc.identifier.urihttp://dx.doi.org/10.1016/j.commatsci.2018.04.044
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/13261
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectMD simulationen_UK
dc.subjectIndenteren_UK
dc.subjectNanoindentationen_UK
dc.subjectDeformationen_UK
dc.subjectTungstenen_UK
dc.titleDesigning nanoindentation simulation studies by appropriate indenter choices: Case study on single crystal tungstenen_UK
dc.typeArticleen_UK

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Designing_nanoindentation_simulation_studies-2018.pdf
Size:
2.5 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Staff publications (SATM)