Journal article
Efficient attenuation of beam vibrations by inertial amplification
Warsaw University of Technology1
Department of Electrical Engineering, Technical University of Denmark2
Acoustic Technology, Department of Electrical Engineering, Technical University of Denmark3
Department of Mechanical Engineering, Technical University of Denmark4
Solid Mechanics, Department of Mechanical Engineering, Technical University of Denmark5
We demonstrate efficient attenuation of flexural vibrations by attaching a simple inertial amplification (IA) mechanism to a slender elastic beam. The mechanism generates enhanced inertial forces between two attachment points, which effectively counteracts the elastic forces in the beam for certain anti-resonance frequencies.
These anti-resonances may be generated in the low-frequency range, even for a small added mass. Furthermore, the hybrid structures are shown to exhibit two neighbouring anti-resonance dips providing wide and deep attenuation regions in the frequency domain. The obtained numerical results are validated with the experimental data.
Language: | English |
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Year: | 2018 |
Pages: | 245-257 |
ISSN: | 18737285 and 09977538 |
Types: | Journal article |
DOI: | 10.1016/j.euromechsol.2018.04.001 |
ORCIDs: | Jensen, Jakob S. and Frandsen, Niels Morten Marslev |