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.
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, A.. - 197:(2026), pp. 271-280. (16th International Conference on Vibration Problems, ICOVP 2025 and 11th International Conference on Wave Mechanics and Vibrations, WMVC 2025 Lisbon, Portugal 2-5 September 2025) [10.1007/978-3-032-13225-3_28].
Predicting the Stop-Bands of Fluid-Filled Metamaterials with Periodic Liquid Dampers
Rustighi, Emiliano;
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 characteristics.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione
