Buffer with negative Poisson ratio structure

A negative Poisson's ratio, buffer technology, applied in springs/shock absorbers, springs made of plastic materials, mechanical equipment, etc., can solve the problems of low porosity, large deformation, and heavy quality of buffers

Active Publication Date: 2019-06-28
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the traditional positive Poisson's ratio buffer has the probl

Method used

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  • Buffer with negative Poisson ratio structure
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  • Buffer with negative Poisson ratio structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] figure 1 It is a structural schematic diagram of a buffer with a negative Poisson's ratio structure in Embodiment 1 of the present invention.

[0046] Such as figure 1 As shown, the negative Poisson's ratio structure buffer in this embodiment includes a first rigid plate 101 , a second rigid plate 102 and a rod-shaped cell body 103 .

[0047] The first rigid plate 101 and the second rigid plate 102 are arranged in parallel, the first rigid plate 101 is arranged on the opposite side of the second rigid plate 102, and the shape, size and size of the first rigid plate 101 and the second rigid plate 102 are the same, The first rigid plate 101 is an annular plate, and the difference between the inner and outer diameters of the annular plate is 40 mm.

[0048]The rod-shaped cell body 103 is disposed between the first rigid plate 101 and the second rigid plate 102 , and the two ends of the rod-shaped cell body 103 are respectively in contact with and connected to the first...

Embodiment 2

[0069] Figure 5 It is a structural schematic diagram of a buffer with a negative Poisson's ratio structure in Embodiment 2 of the present invention.

[0070] Such as Figure 5 As shown, the negative Poisson's ratio structure buffer in this embodiment includes a first rigid plate 201 , a second rigid plate 202 and a rod-shaped cell body 203 .

[0071] The first rigid plate 201 and the second rigid plate 202 are arranged in parallel, the first rigid plate 201 is arranged on the opposite side of the second rigid plate 202, and the shape, size and size of the first rigid plate 201 and the second rigid plate 202 are the same, The first rigid plate 201 is an annular plate, and the difference between the inner and outer diameters of the annular plate is 40 mm.

[0072] The rod-shaped cell body 203 is disposed between the first rigid plate 201 and the second rigid plate 202 , and the two ends of the rod-shaped cell body 203 are respectively in contact with and connected to the firs...

Embodiment 3

[0093] Figure 9 It is a structural schematic diagram of a buffer with a negative Poisson's ratio structure in Embodiment 3 of the present invention.

[0094] Such as Figure 9 As shown, the negative Poisson's ratio structure buffer in this embodiment includes a first rigid plate 301 , a second rigid plate 302 and a rod-shaped cell body 303 .

[0095] The first rigid plate 301 and the second rigid plate 302 are arranged in parallel, the first rigid plate 301 is arranged on the opposite side of the second rigid plate 302, and the shape, size and size of the first rigid plate 301 and the second rigid plate 302 are the same, The first rigid plate 301 is an annular plate, and the difference between the inner and outer diameters of the annular plate is 40mm.

[0096] The rod-shaped cell body 303 is disposed between the first rigid plate 301 and the second rigid plate 302 , and the two ends of the rod-shaped cell body 303 are respectively in contact with and connected to the first...

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Abstract

The invention provides a buffer with a negative Poisson ratio structure. The buffer with the negative Poisson ratio structure is characterized by comprising two annular plates which are arranged in parallel and further comprising a rod-shaped cell body which is arranged between the two annular plates. The rod-shaped cell body is of the negative Poisson ratio structure and is formed by arranging aplurality of rod-shaped cell parts in a circumferential array and in modes of taking the central axes of the annular plates as axes and taking an angle alpha as an interval, wherein the angle alpha islarger than 0 degree and less than 360 degrees, each rod-shaped cell part comprises at least one rod-shaped cell unit, each rod-shaped cell unit comprises at least three circular rods, and each circular rod is M-shaped and comprises a first rod part, a V-shaped second rod part and a third rod part which are connected in sequence; and the end, away from the second rod part, of the first rod part serves as a first connecting end, the end, away from the second rod part, of the third rod part serves as a second connecting end, and the plurality of first connecting ends are correspondingly connected and the plurality of second connecting ends are correspondingly connected, so that the plurality of circular rods form a centrally symmetrical structure.

Description

technical field [0001] The invention relates to the technical field of vibration reduction, in particular to a buffer with a negative Poisson's ratio structure. Background technique [0002] With the advancement of science and technology and the development of 3D printing technology, more and more new materials have been discovered and widely used, one of which is the material of Poisson's ratio structure. [0003] Poisson's ratio is the absolute value of the ratio of the transverse strain caused by a uniformly distributed longitudinal stress to the corresponding longitudinal strain within the proportional limit of the material. When a conventional material is stretched (or compressed), it will shrink (or expand) in the direction of the vertical force. This material is called a positive Poisson's ratio material; on the contrary, some materials are perpendicular to the direction of force Expansion (or contraction) deformation occurs on the material, which is called negative ...

Claims

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Application Information

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IPC IPC(8): F16F1/36F16F1/373F16F1/44F16F1/46
Inventor 仲梁维倪静李震宇
Owner UNIV OF SHANGHAI FOR SCI & TECH
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