Influence of Chemical Heterogeneity and Third Body on Adhesive Strength: Experiment and Simulation

We investigate experimentally and numerically the influence of chemical heterogeneity third-body particles on adhesive contact. Chemical is generated by treatment contacting bodies changing locally surface energy. For studying third body, two types are used: sand with various geometrical shapes sizes, steel spheres equal radius. Dependencies normal force indentation depth at both indenting pull-off as well evolution contact configuration investigated. Corresponding numerical simulations carried out using boundary element method (BEM).