A Power-Based Approach based on Active Structural Intensity: Stop Band Prediction of Vibroacoustic Metamaterial Plate

The paper proposes a power-based approach using the active structural intensity for predicting the stop band behaviour of finite Vibroacoustic Metamaterials (VAMM) structures. The conventional methods used for predicting stop band behaviour in periodic structures are based on the dynamic behaviour o...

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Bibliographic Details
Main Authors: Atzrodt, H., Maniam, A., Droste, M., Ries, S.
Format: Conference Proceeding
Language:English
Subjects:
Attenuation
Boundary conditions
Metamaterials
Resonant frequency
Statistical analysis
Steel
Vibrations
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Summary:The paper proposes a power-based approach using the active structural intensity for predicting the stop band behaviour of finite Vibroacoustic Metamaterials (VAMM) structures. The conventional methods used for predicting stop band behaviour in periodic structures are based on the dynamic behaviour of a unit cell model, which does not consider real boundary conditions, design complexities or non-uniformities in the structure. The proposed method quantifies the vibrational energy flow and energy transmission pathways within a locally resonant finite VAMM structure, allowing for a quantitative analysis of the vibration attenuation capabilities of a VAMM structure. This work also establishes a definition of stop band in terms of percentage, which can be leveraged for a variety of applications based on the intended purpose and desired degree of vibration attenuation of the VAMM structures.
ISSN:2573-2706
DOI:10.1109/Metamaterials58257.2023.10289153