Laboratoire de Physique Statistique, ENS Paris, France & Reproduction et Développement des Plantes, ENS Lyon, France

Arezki Boudaoud is an expert in nonlinear phenomena in thin elastic rod and sheets (folding, packing, crumpling, vibrations) and their applications to developmental biology.

Chaos and turbulence in vibrating plates

The presence of a fluid is generally implied when using the concept of turbulence. In contrast, our experiments concern the large amplitude vibrations of an elastic plate. In a first setup, we found period doubling, aperiodic motion, and a transition whereby the plate rotates at constant velocity. In a second set-up, we reconsidered the apparatus that was used in theatres to mimic the sound of thunder and showed that it shares many features with hydrodynamic turbulence.