Innovative hybrid approach for broadband vibration suppression: Integrating semi-active piezoelectric shunt damping and passive acoustic black hole effect
Source abstract
Abstract
Vibration control remains a pivotal challenge in engineering, demanding solutions that offer wideband and low-frequency effectiveness with minimal energy. This paper introduces a hybrid vibration control method, combining semi-active piezoelectric (Piezo), and passive acoustic black hole (ABH) techniques. The semi-active approach, similar to Bang-Bang control, efficiently curtails low-frequency vibrations without precise control modes, using scant external energy. Concurrently, passive strategies exploit the ABH effect to absorb medium-high frequency waves through focused damping. The integration of Piezoelectric integrated ABH (Piezo-ABH) structures showcases the feasibility of broad-spectrum vibration dampening, with experimental outcomes revealing significant vibration reduction across 20 ∼ 2000 Hz, averaging an 8.0 dB decrease.
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Research context
OpenAlex topics: Vibration Control and Rheological Fluids · Acoustic Wave Phenomena Research · Aeroelasticity and Vibration Control
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Mechanics and Control of Aerospace Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu Province, China
Funding
National Key Research and Development Program of China · National Natural Science Foundation of China
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