MS 25

Wave Propagation in Structures and Materials

Organizers

Marco Lepidi,
Department of Civil, Chemical and Environmental Engineering, University of Genoa, Italy

Wieslaw Ostachowicz,
Institute of Fluid Flow Machinery, Polish Academy of Science, Gdansk, Poland

Annamaria Pau,
Department of Structural and Geotechnical Engineering, Sapienza University of Rome, Italy

Abstract

This mini-symposium aims to gather recent research that employs a deterministic approach to investigate the free and forced propagation of elastic waves in waveguides, solids, and complex media. Complex media encompass continua and lattices with periodic microstructures, such as sonic/phononic crystals, porous materials, magneto-electro-elastic composites, crystal and beam lattices, architected cellular metamaterials, and metasurfaces. We invite submissions of theoretical, analytical, numerical, and experimental works that explore the dynamic response in terms of dispersion properties, wave transmission/reflection, energy dissipation, and the creation of customized, exotic, or extreme mechanical functionalities. We particularly encourage studies focused on amplitude-dependent behaviors and rich dynamic scenarios arising from geometric and constitutive nonlinearities. The physical phenomena under investigation include local resonances, polarization and localization effects, negative refractions, directional and nonreciprocal energy transfers, fluid/structure interactions, acoustoelastic couplings, wave lensing, tunnelling, and metadamping. Furthermore, we seek contributions highlighting advances in engineering applications derived from the practical utilization of such phenomena. These applications encompass sound and vibration control, spectral design and optimization, structural health monitoring, damage detection, and damage imaging.

Key words:

bulk waves, guided waves, dispersion properties, architected/microstructured materials, sound and vibration control, SHM, damage detection, damage imaging, ultrasonic waves, acoustic waves, acoustoelasticity, mechanical and acoustic metamaterials, sonic/phononic crystals, magneto-electro-elastic composites, nonlinearities, spectral design, porous materials.