Revisit the adhesive contact between a nanoscale rigid sphere and an elastic half-space: considering the effect of sphere size

Jiunn Jong Wu*, Yu Ju Lin

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

1 Scopus citations

Abstract

The current paper revisits the adhesive contact between a rigid nanoscale sphere and an elastic half-space. Using analytical solution for traction and a modified numerical scheme, a new simulation is proposed. The adhesive contact is simulated faster and more easily than previous researches. The effect of sphere size is investigated. A modified spherical JKR model and spherical DMT model are proposed. The results are compared with spherical JKR, spherical DMT, and rigid sphere model. The load–approach and contact radius–load relations can be predicted by the modified spherical JKR model for sphere radius larger than 50ɛ. Finally, approximation equations for pull-off force vs. Tabor parameter and jump-in distance vs. Tabor parameter are proposed.

Original languageEnglish
Pages (from-to)127-148
Number of pages22
JournalJournal of Adhesion Science and Technology
Volume31
Issue number2
DOIs
StatePublished - 17 01 2017

Bibliographical note

Publisher Copyright:
© 2016 Informa UK Limited, trading as Taylor & Francis Group.

Keywords

  • Adhesive contact
  • nano contact
  • numerical analysis

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