par Berke, Peter 
;Massart, Thierry
Référence Tribology international, 47, page (167-174)
Publication Publié, 2012
;Massart, Thierry Référence Tribology international, 47, page (167-174)
Publication Publié, 2012
Article révisé par les pairs
| Résumé : | When nanoindentation is used for material characterization in small indentation depths, surface roughness and frictional effects can play an important role. In the present computational study the implications of a slip rate dependent frictional behavior in the tip-flat/rough sample contact are investigated. A potential contribution of stickslip phenomenon generated/enhanced by the adopted velocity-weakening friction approximation to pop-in like displacement bursts is observed. Undoubtedly discrete plastic events are the dominant source of pop-ins in a general setting, however the investigated frictional effect is shown to give a potential contribution to experimentally observed nanoindentation displacement bursts in the studied setup. © 2011 Elsevier Ltd. All rights reserved. |
