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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Moving textures: Simulation of a ring sliding on a textured liner

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Checo, Hugo M. [1] ; Ausas, Roberto F. [1] ; Jai, Mohammed [2] ; Cadalen, Jean-Paul [3] ; Choukroun, Franck [3] ; Buscaglia, Gustavo C. [1]
Total Authors: 6
[1] Univ Sao Paulo, Inst Ciencias Matemat & Comp, BR-13560970 Sao Carlos, SP - Brazil
[2] INSA Lyon Pole Math, ICJ, F-69621 Villeurbanne - France
[3] RENAULT, F-92508 Rueil Malmaison - France
Total Affiliations: 3
Document type: Journal article
Source: TRIBOLOGY INTERNATIONAL; v. 72, p. 131-142, APR 2014.
Web of Science Citations: 40

Numerical simulations of the ring/liner contact in which the liner exhibits a periodic texture (pockets) are reported. The mass-conservative Elrod-Adams model is used to treat cavitation, and the dynamics of the ring is considered with a linear mass that corresponds to actual engine compression rings. The results, computed at a Siribeck number of 10(-3) and thus in the hydrodynamic lubrication regime, show that the ring profile determines whether pocketing is beneficial or not. For strongly non-conformal contacts pocketing is detrimental, but for quasi-conformal contacts friction reductions of up to 73% are predicted. The largest reduction in friction was obtained for textures consisting of close-packed arrays of circular pockets of diameter comparable to the size of the contact. (C) 2013 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 11/24147-5 - Advanced computational methods for the simulation of lubrified contacts
Grantee:Hugo Marcial Checo Silva
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 12/14481-8 - Numerical approximation of microfluidic interfaces with mechano-bio-chemical coupling
Grantee:Gustavo Carlos Buscaglia
Support type: Regular Research Grants