Dresden 2026 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 19: Franco-German Session on Granular Matter I

DY 19.1: Invited Talk

Tuesday, March 10, 2026, 09:30–10:00, HÜL/S186

Mechanics of entangled fibers — •Olivier Pouliquen¹, Aubin Archambault¹, Ignacio Andrade², Jerome Crassous³, Henri Lhuissier¹, and Joël Marthelot¹ — ¹IUSTI, CNRS-Aix Marseille University, Marseille, France — ²Departamento de Física, Universidad de Chile, Santiago, Chile — ³CNRS - ESPCI Université PSL/Sorbonne Université/Université de Paris, paris, France

When long, flexible fibers are densely packed, they form cohesive structures, such as those found in bird*s nests, cotton balls, or fibrous insulation materials. These peculiar granular assemblies exhibit complex mechanical behaviors: they can be compacted and sustain tensile stress, despite the absence of adhesive bonds. Through experiments on model materials and discrete-element simulations, we investigate the interplay between elasticity and friction that governs the mechanics of entangled, non-bonded fiber networks.

Keywords: granular media; rheology