Damping board based on negative poisson ratio structure

A technology of negative Poisson's ratio and damping plate, which is applied in the field of shock-absorbing materials, can solve problems such as poor energy dissipation effect and insufficient material deformation, and achieve the effect of optimizing vibration characteristics and increasing dissipation effect

Active Publication Date: 2014-04-30
INST HYDRAULIQUE DU SUD OUEST UNIV DE JIAOTONG DE CHONGQING +1
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  • Abstract
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Problems solved by technology

The problem with the existing ordinary damping plate is that the deformation of the material is not sufficient, and the e

Method used

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  • Damping board based on negative poisson ratio structure
  • Damping board based on negative poisson ratio structure
  • Damping board based on negative poisson ratio structure

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Embodiment Construction

[0017] Poisson's ratio is the absolute value of the ratio of the transverse strain to the longitudinal strain of the material, also called the transverse deformation coefficient, which is an elastic constant reflecting the transverse deformation of the material. Typically, materials have a positive Poisson's ratio, meaning that when a material is stretched longitudinally, its transverse dimension shrinks. A material is a negative Poisson's ratio material if its transverse dimension becomes larger when it is stretched longitudinally. The present invention is designed based on this characteristic of the negative Poisson's ratio material.

[0018] see figure 2 , image 3 and Figure 4 , as can be seen from the figure, the damping plate proposed by the present invention includes a base plate 1 and a damping material 2, and a negative Poisson’s ratio structure 3 is fixed on the base plate 1, and the cross section of the negative Poisson’s ratio structure 3 forms several holes ...

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Abstract

The invention discloses a damping board based on a negative poisson ratio structure. The damping board comprises a substrate board and damping material. The negative poisson ratio structure is fixed to the substrate board, a plurality of holes are formed in the cross section of the negative poisson ratio structure, holes are formed between the negative poisson ratio structure and the substrate board, and the damping material is filled into the holes as filler. On the basis of the tensile expansion and compressed deformation characteristics of the negative poisson ratio structure, the material far away from the substrate board can be fully deformed through structural deformation, and thus the damping material can be fully utilized, the vibration energy dissipation effect can also be obviously improved, the defects of an ordinary damping board are overcome, and the vibration performance of the damping board is optimized obviously.

Description

technical field [0001] The invention relates to the improvement of shock-absorbing materials, specifically a damping plate based on a negative Poisson's ratio structure, and belongs to the technical field of shock-absorbing materials. Background technique [0002] In many occasions, shock absorption treatment is required, such as vehicles, aerospace, dams, bridges, etc., the use of shock-absorbing materials is a common way of shock-absorbing treatment, and the damping plate formed based on damping materials is the most common one. A shock-absorbing material. Ordinary damping plate structure such as figure 1 As shown, it consists of a base plate 1 and a damping material 2 attached to the base plate. The damping material 2 can be rubber, asphalt, etc., and the base plate 1 can be steel plate or aluminum. The existing problem of this common damping plate is that the deformation of the material is insufficient, and the energy dissipation effect is not good, and only the dampin...

Claims

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Application Information

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IPC IPC(8): F16F1/02
CPCF16F7/121
Inventor 马希钦余葵孙姣霞刘洋陈杰吴俊李晓飚杨昌棋
Owner INST HYDRAULIQUE DU SUD OUEST UNIV DE JIAOTONG DE CHONGQING
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