Progressive adhesion mechanics of elastomeric shells against a rigid substrate: From thin to thick

Chenxu Zhao, Kai tak Wan, Wanliang Shan

Research output: Contribution to journalArticlepeer-review

Abstract

Hemispherical elastomeric shells with a range of thickness, h, press against a planar glass plate in the presence of interfacial adhesion. The applied load, P, is measured as a function of approach distance, δ, while the contact radius, a, is simultaneously monitored. Thick shells with thickness exceeding 3/10 of the hemispherical radius, R, behaves as the classical Hertz-JKR solid sphere, as manifested by the pull-off tensile force and contact radius. As the shell gets thinner, the detachment trajectory deviates and the pull-off force decreases. Very thin shells with h/R falling below 0.05, an uptick in adhesion is observed. Measurements are performed in shells fabricated in two common polymers. Experimental data are fairly consistent with computational results generated by finite element analysis.

Original languageEnglish (US)
Article number102140
JournalExtreme Mechanics Letters
Volume68
DOIs
StatePublished - May 2024
Externally publishedYes

Keywords

  • Adhesion
  • Elastomer
  • Large deformation
  • Pull-off
  • Shell

ASJC Scopus subject areas

  • Bioengineering
  • Chemical Engineering (miscellaneous)
  • Engineering (miscellaneous)
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'Progressive adhesion mechanics of elastomeric shells against a rigid substrate: From thin to thick'. Together they form a unique fingerprint.

Cite this