Self-amplification of solid friction in interleaved assemblies

Self-amplification of solid friction in interleaved assemblies 
Physical Review Letters, 116 (2016) 015502-(1-5)

H. Alarcon, T. Salez, C. Poulard, J.-F. Bloch, E. Raphael, K. Dalnoki-Veress, F. Restagno

It is nearly impossible to separate two interleaved phone books when held by their spines. A full understanding of this astonishing demonstration of solid friction in complex assemblies remains elusive. In this Letter, we report on experiments with controlled booklets and show that the force required increases sharply with the number of sheets. A model captures the effect of the number of sheets, their thickness, and the overlapping distance. Furthermore, the data collapse onto a self-similar master curve with one
dimensionless amplification parameter. In addition to solving a long-standing familiar enigma, this model system provides a framework with which one can accurately measure friction forces and coefficients at low loads, and that has relevance to complex assemblies from the macro- to the nanoscale

Haut de page

À lire aussi...

Arrivée de deux ATER au sein d’EC2M

Deux ATER, Silke Henkes et Djamel El Masri ont rejoint l'équipe EC2M. Silke Henkes, théoricienne, spécialiste du jamming a récemment travaillé sur (...) 

> Lire la suite...

Solid capillarity : when and how does surface tension deform soft solids ?

Solid capillarity: when and how does surface tension deform soft solids? B. Andreotti, O. Bäumchen, F. Boulogne, K. E. Daniels, E. R. Dufresne, H. (...) 

> Lire la suite...