Asperity deformation during running-in

Jørgen Jakobsen, Ion Marius Sivebæk

Research output: Contribution to journalConference articleResearchpeer-review


Asperities loaded in pure rolling against a hard, smooth surface will often be deformed at the first contact event and will thereby experience high normal stress, presumably of a magnitude near the Vickers hardness of the softer material. Continued running-in can be imagined to develop into lower stress levels and an increase of contact area. An asperity model simulating a running-in process of rough surfaces with lengthy protractions in the rolling direction was investigated. After a limited range of only about 104 contact events a state of very low deformation rate was found.
Original languageEnglish
Issue number1-2
Pages (from-to)60-65
Number of pages5
Publication statusPublished - 2011

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