File Download
There are no files associated with this item.
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1063/1.3043582
- Scopus: eid_2-s2.0-58149218566
- WOS: WOS:000262225100106
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: Mechanism for material transfer in asperity contact
Title | Mechanism for material transfer in asperity contact |
---|---|
Authors | |
Issue Date | 2008 |
Citation | Journal of Applied Physics, 2008, v. 104, n. 12, article no. 124312 How to Cite? |
Abstract | We perform a series of molecular dynamics simulations of asperity contact and separation in a model metallic system for both symmetric and asymmetric asperity geometries, for loading in the [001], [110], and [111] directions, and for systems with different works of adhesion . We examine contact morphology evolution, force-displacement relations, and the quantity of atoms transferred from one surface to the other NT upon separation with a focus on underlying physical mechanisms that control these. We find that there is a critical work of adhesion, below which no plastic deformation occurs on contact separation and a higher one in which plastic deformation occurs but no material transfer occurs. We interpret these within a model for dislocation nucleation at the crack tip. We observe abrupt changes in the amount of material transferred with increasing work of adhesion that represent thresholds for changes in deformation mechanisms. These depend on the geometry of the contact and the crystallographic orientation relative to the loading direction. © 2008 American Institute of Physics. |
Persistent Identifier | http://hdl.handle.net/10722/303339 |
ISSN | 2023 Impact Factor: 2.7 2023 SCImago Journal Rankings: 0.649 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Song, Jun | - |
dc.contributor.author | Srolovitz, David J. | - |
dc.date.accessioned | 2021-09-15T08:25:06Z | - |
dc.date.available | 2021-09-15T08:25:06Z | - |
dc.date.issued | 2008 | - |
dc.identifier.citation | Journal of Applied Physics, 2008, v. 104, n. 12, article no. 124312 | - |
dc.identifier.issn | 0021-8979 | - |
dc.identifier.uri | http://hdl.handle.net/10722/303339 | - |
dc.description.abstract | We perform a series of molecular dynamics simulations of asperity contact and separation in a model metallic system for both symmetric and asymmetric asperity geometries, for loading in the [001], [110], and [111] directions, and for systems with different works of adhesion . We examine contact morphology evolution, force-displacement relations, and the quantity of atoms transferred from one surface to the other NT upon separation with a focus on underlying physical mechanisms that control these. We find that there is a critical work of adhesion, below which no plastic deformation occurs on contact separation and a higher one in which plastic deformation occurs but no material transfer occurs. We interpret these within a model for dislocation nucleation at the crack tip. We observe abrupt changes in the amount of material transferred with increasing work of adhesion that represent thresholds for changes in deformation mechanisms. These depend on the geometry of the contact and the crystallographic orientation relative to the loading direction. © 2008 American Institute of Physics. | - |
dc.language | eng | - |
dc.relation.ispartof | Journal of Applied Physics | - |
dc.title | Mechanism for material transfer in asperity contact | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1063/1.3043582 | - |
dc.identifier.scopus | eid_2-s2.0-58149218566 | - |
dc.identifier.volume | 104 | - |
dc.identifier.issue | 12 | - |
dc.identifier.spage | article no. 124312 | - |
dc.identifier.epage | article no. 124312 | - |
dc.identifier.isi | WOS:000262225100106 | - |