Modeling and experimental analysis of particle damping phononic crystal plate
Source abstract
Abstract
A phononic crystal with particle assembly dampers was constructed. A high-speed camera was used to record and observe the vibration phenomenon of the particle assembly under external excitation. By analyzing the vibrations of the particle assembly, a continuous system equivalent to the discrete particle assembly was proposed. The particle damping equivalent model was fitted to data using an artificial neural network. Two particle damping phononic crystal plates were designed. Based on the equivalent model, a particle damping phononic crystal model was established. The results of the simulations and experiments showed that the average damping effect of the particle damping structure was greater than 75%. Particle damping phononic crystals possess excellent low vibration transmission characteristics, narrow bandgap characteristics at low frequencies, and high damping characteristics.
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Research context
OpenAlex topics: Acoustic Wave Phenomena Research · Granular flow and fluidized beds · Cellular and Composite Structures
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Noise and Vibration, Naval University of Engineering 1 , Wuhan, Hubei 430030, China
National Key Laboratory on Ship Vibration and Noise 2 , Wuhan, Hubei 430030, China
School of Computer and Information Engineering, Xiamen University of Technology 3 , Xiamen, Fujian 361102, China
Funding
National Key Research and Development Program of China · National Natural Science Foundation of China
References (30)
Show source-provided references
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