Experimental device for acoustic metamaterial plate structure

A technology of acoustic metamaterials and experimental devices, applied in the direction of material analysis, measuring devices, and analytical materials using sound waves/ultrasonic waves/infrasonic waves, can solve problems that affect the accuracy of experimental data and lack of experimental devices, and achieve no prestress, Easy to operate and ensure the effect of accuracy
CN110609086AActive Publication Date: 2019-12-24HARBIN ENG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN ENG UNIV
Publication Date
2019-12-24

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Abstract

The invention discloses an experimental device for an acoustic metamaterial plate structure, and belongs to the technical field of structural elements. The problem that the accuracy of the experimental data is influenced due to the lack of dedicated experimental device in the process of performing dynamics experiment research on the acoustic metamaterial plate structure in the prior art is mainlysolved. Two clamp brackets are oppositely arranged at two sides of the metamaterial plate, each fixed pressing plate is arranged at a top of one clamp bracket, one substrate in the metamaterial plateis arranged between the clamp bracket and the fixed pressing plate, and the metamaterial plate is fixedly arranged on the clamp brackets; each positioning rod is arranged at one side of each of two clamp brackets, and each positioning rod is fixedly connected with two clamp brackets; and each clamp bracket is fixedly connected with a vibration-isolation foundation track through N connectors. The device is mainly used as an experimental device for testing the dynamic performance of the acoustic metamaterial plate structure.
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Description

technical field

[0001] The invention relates to an experimental device for an acoustic metamaterial plate structure, belonging to the technical field of structural elements. Background technique

[0002] Engineering structures such as rods, beams, and plates are the main carriers that generate or transmit vibrations, and they are also the parts with more prominent vibration problems. The acoustic metamaterial structure is based on rods, beams, plates, etc., and the local resonance units are periodically arranged. It has significant elastic wave bandgap characteristics. By artificially adjusting the wave propagation, the structure can be effectively realized in the forbidden band frequency range. Internal vibration isolation.

[0003] Compared with theoretical studies and numerical simulations, there are very few experimental studies on the dynamics of metamaterial structures, especially metamaterial plate structures. Dynamic experiments of acoustic metamaterial plate struc...

Claims

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