Design and experimental validation of a plate with internally resonating lattices for low-frequency vibro-acoustic control

• A flexible plate and an internal resonating lattice are combined in an assembly which is characterized by high damping performance and tuned vibration attenuation at low frequencies. The resonating lattice consists of an elastomeric frame equipped with a metallic inclusion which is designed to resonate at selected frequencies. The system achieves high damping performance by combining the frequency-selective properties of internally resonating structures, with the energy dissipation characteristics of their constituent material. Furthermore, tuning and modifying the layout of the resonant lattice allows for tailoring of the resonating properties so that vibration attenuation is obtained over desired frequency ranges. Experimental results show the performances of the resonant assembly and suggest its potential application in vibrations and noise reduction.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)

Nyckelord

Acoustic variables control

Damping

Energy dissipation

Lattice vibrations

Noise abatement

Plates (structural components)

Constituent materials

Energy dissipation characteristics

Experimental validations

Frequency ranges

Frequency-selective properties

Metallic inclusions

Resonating structures

Vibration attenuation

Vibrations (mechanical)

Publikations- och innehållstyp

ref (ämneskategori)

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