Contact of a spherical probe with a stretched rubber substrate

In a recently published paper, we report on a theoretical and experimental investigation of the normal contact of stretched neo-Hookean substrates with rigid spherical probes. Starting from a published formulation of surface Green’s function for incremental displacements on a pre-stretched, neo-Hookean, substrate (L.H. Lee \textitJ. Mech. Phys. Sol. \textbf56 (2008) 2957-2971), a model is derived for both adhesive and non-adhesive contacts. The shape of the elliptical contact area together with the contact load and the contact stiffness are predicted as a function of the in-plane stretch ratios $\lambda_x$ and $\lambda_y$ of the substrate. The validity of this model is assessed by contact experiments carried out using an uniaxally stretched silicone rubber. For stretch ratio below about 1.25, a good agreement is observed between theory and experiments. Above this threshold, some deviations from the theoretical predictions are induced as a result of the departure of the mechanical response of the silicone rubber from the neo-Hokeean description embedded in the model.


Haut de page



À lire aussi...

Interplay between silicate and hydroxide ions during geopolymerization

Geopolymer is a low environmental impact binder obtained from clay or industrial by-products. However, to be a realistic competitor to the (…) 

> Lire la suite...

Rules of microgels assembly by metallo-supramolecular interactions

A recent paper from the Colloids, Assemblies and Interfacial Dynamics team (CAID team) reports on the rules of assembly of thermoresponsive (…) 

> Lire la suite...

 

Informations Pratiques

Sciences et Ingénierie de la Matière Molle - UMR 7615

10 rue Vauquelin
75231 PARIS CEDEX 05

  • Directeur : J.B. d’Espinose
  • Comité de direction : A. Chateauminois, Y. Tran, B. Bresson
  • Pôle gestion : F. Decuq, D. Kouevi Akoe, S. Diakite
  • Communication : A. Hakopian et M. Ciccotti
  • Systèmes d’information : A. Hakopian
  • Assistant prévention : F. Martin et M. Hanafi

Comment venir ?
Mentions légales