This paper investigates the formation of band gaps in fluid-filled structures with periodic liquid dampers. A simplified mechanical model is employed to approximate the sloshing dynamics and is integrated into a host structure. The vibration attenuation capabilities of the structure are evaluated applying the Floquet-Bloch theory to the dynamic stiffness matrix of the periodic cell. The results reveal the coexistence of low-frequency local resonance band gaps and high-frequency Bragg-type band gaps. A parametric study highlights the role of fluid depth and cell geometry in tuning the band gap characteristics
Predicting the Stop-Bands of Fluid-Filled Metamaterials with Periodic Liquid Dampers / Dall'Olio, F.; Manconi, E.; Rustighi, E.; Ferrari, Arianna. - 197:(2026), pp. 271-280. ( 16th International Conference on Vibration Problems (ICOVP-2025) & 11th International Conference on Wave Mechanics and Vibrations (WMVC-2025) Lisbon, Portugal September 2-5, 2025.) [10.1007/978-3-032-13225-3_28].
Predicting the Stop-Bands of Fluid-Filled Metamaterials with Periodic Liquid Dampers
Dall'Olio F.;Manconi E.;Ferrari Arianna
2026-01-01
Abstract
This paper investigates the formation of band gaps in fluid-filled structures with periodic liquid dampers. A simplified mechanical model is employed to approximate the sloshing dynamics and is integrated into a host structure. The vibration attenuation capabilities of the structure are evaluated applying the Floquet-Bloch theory to the dynamic stiffness matrix of the periodic cell. The results reveal the coexistence of low-frequency local resonance band gaps and high-frequency Bragg-type band gaps. A parametric study highlights the role of fluid depth and cell geometry in tuning the band gap characteristicsI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
