Experimental device of surrounding type local resonance light dot matrix sandwich plate structure

A technology of local resonance and experimental device, applied in measurement device, vibration suppression adjustment, spring/shock absorber functional characteristics, etc., can solve the problems of large stiffness and large mass, inability to control low-frequency elastic waves, etc., and achieve good load-bearing capacity , the effect of simple structure and easy-to-obtain materials

Pending Publication Date: 2020-08-07
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the traditional lattice sandwich structure cannot control the propagation of low-frequency elastic waves, and the local resonance acoustic m

Method used

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  • Experimental device of surrounding type local resonance light dot matrix sandwich plate structure
  • Experimental device of surrounding type local resonance light dot matrix sandwich plate structure
  • Experimental device of surrounding type local resonance light dot matrix sandwich plate structure

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Specific implementation mode 1: Combination Figure 1 to Figure 9 Explaining this embodiment, the experimental device of a surrounding local resonance light-weight lattice sandwich panel structure described in this embodiment includes an upper plate body 1 and a lower plate body 2, and an upper plate body 1 and a lower plate body. 2 are arranged horizontally from top to bottom. The experimental device of the surround type local resonance light-weight lattice sandwich panel structure also includes a plurality of supporting units 3, which are arranged in a matrix on the upper plate Between the lower surface of the body 1 and the upper surface of the lower plate body 2.

[0026] The upper board body 1 and the lower board body 2 form a double-layer board structure, which has a more excellent load-bearing performance. The supporting unit 3 is connected with the upper and lower board bodies by bonding. The lower surface of the upper plate body 1 and the upper surface of the lowe...

Example Embodiment

[0027] Specific implementation manner two: combination Figure 1 to Figure 4 To describe this embodiment, the number of rows in the matrix formed by the multiple support units 3 is M, and the number of columns in the matrix formed by the multiple support units 3 is N, and both M and N are positive integers. The operator can select the number of support units 3 according to different experimental needs to achieve the best experimental effect.

[0028] The other components and connection relationships are the same as in the first embodiment.

Example Embodiment

[0029] Specific implementation mode three: combination image 3 To describe this embodiment, each support unit 3 described in this embodiment is composed of four vibration absorber components, and the four vibration absorber components are arranged in a pyramid shape.

[0030] Other components are the same as those of the first or second embodiment in terms of connection relationship.

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Abstract

The invention discloses an experimental device of a surrounding type local resonance light dot matrix sandwich plate structure, relates to a deoxidizing structure and aims to solve the problem of thefailure of a traditional lattice sandwich structure to control the propagation of low-frequency elastic waves and the problem of low rigidity and large mass of a local resonance type acoustic meta-material. The experimental device comprises an upper plate body and a lower plate body; the upper plate body and the lower plate body are sequentially and horizontally arranged from top to bottom; and the experimental device further comprises a plurality of supporting units which are arranged between the lower surface of the upper plate body and the upper surface of the lower plate body in a matrix mode. The invention belongs to the technical field of mechanical experiment devices. A lattice sandwich and a local resonance type acoustic meta-material (a vibration absorber assembly) are combined, so that the structure has higher strength and stability, and meanwhile, can achieve a low-frequency vibration suppression effect.

Description

Technical field [0001] The invention relates to an experimental device of a lattice sandwich panel structure, in particular to an experimental device of a surrounding local resonance light-weight lattice sandwich panel structure, and belongs to the technical field of mechanical experimental devices. Background technique [0002] Acoustic metamaterial is a phononic crystal (periodic structure) based on a local resonance mechanism, which contains periodic mechanical or electromechanical resonance elements, which have the function of dissipating, absorbing, and converting vibration and noise energy. Acoustic metamaterials can generate low-frequency band gaps and have special functions to control large-wavelength low-frequency vibration and noise with a small-sized structure. Among them, the lattice sandwich type acoustic metamaterial has excellent characteristics such as light weight and high strength, while the local resonance type acoustic metamaterial can achieve the purpose of o...

Claims

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Application Information

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IPC IPC(8): G01N29/26F16F15/067F16F1/12
CPCG01N29/26F16F15/067F16F1/121F16F2228/04F16F2228/06
Inventor 李金强范鑫磊张垚李凤鸣
Owner HARBIN ENG UNIV
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