The colloquium will focus on theoretical, experimental and applied topics on granular media, in particular ordered granular metamaterials, and will review recent developments on more general types of nonlinear acoustic metamaterials. The conference will bring together researchers from the applied mathematics, engineering and nonlinear physics communities. Topics of interest include, but are not limited to:

• Nonlinear dynamics of granular metamaterials, acoustic metamaterials and mechanical structures : solitary wave propagation, nonlinear localized modes and resonances, multistability...
• Applications of nonlinear acoustic metamaterials to vibration and shock mitigation, acoustic filtering and lensing, energy redirection and harvesting,…
• Impacts and vibrations in granular media and multibody systems : experiments, physical and numerical modeling, effective medium properties, multiple impact laws, nonsmooth models…
• Analysis of nonlinear waves in discrete mechanical systems through bifurcation theory, modulation theory, variational methods,…
• Industrial applications