Incipient sliding of adhesive contacts.

Autor: Pérez-Ràfols, Francesc, Nicola, Lucia
Předmět:
Zdroj: Friction (2223-7704); Jun2022, Vol. 10 Issue 6, p963-976, 14p
Abstrakt: 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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index