Abstract
This study investigates how resonator placement and boundary conditions influence bandgap formation in a locally resonant beam metastructure. The steady-state response of the structure, subjected to a concentrated harmonic load, is then computed using the modal analysis. Four different boundary conditions are considered. For each boundary condition, the resonator array is shifted, and the corresponding responses are calculated. The study reveals that, for a cantilever beam, the widest bandgap occurs when the last resonator in the periodic array is positioned at the free end. For the other cases, no significant change in bandgaps is observed.
Original language | English |
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Number of pages | 10 |
Journal | Mechanics of Advanced Materials and Structures |
Early online date | Jan 2025 |
DOIs | |
Publication status | Published - 15 Jan 2025 |
Keywords
- Bandgap
- Boundary conditions
- Local resonator
- Metastructure
- Modal analysis