Incipient sliding of adhesive contacts

Francesc Pérez-Ràfols*, Lucia Nicola

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

A model is proposed herein to investigate the incipient sliding of contacts in the presence of both friction and adhesion, where the interfacial response is modeled based on traction-separation laws. A Maugis-like parameter is defined to characterize the response in the tangential direction. Subsequently, the model is used to investigate the contact between a smooth cylinder and a flat body, where adhesion-friction interactions are strong. A range of behaviors are observed when a tangential displacement is imposed: When the parameter is low, the contact pressure exhibits a relatively constant profile; when it is high, a pressure spike is observed at the edge of the contact. This difference is caused by a significant interface compliance in the former case, which limits the amount of slip. The results for the mid-range values of the Maugis-like parameter can qualitatively replicate various experiments performed using polydimethylsiloxane (PDMS) balls.

Original languageEnglish
Pages (from-to)963-976
JournalFriction
Volume10
Issue number6
DOIs
Publication statusPublished - 2021

Keywords

  • adhesion
  • incipient sliding
  • traction-separation laws

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