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Multi-stable-state adjustable vibration absorption device and preparation method thereof

A multi-stable and stable technology, applied in non-rotational vibration suppression, counterweight and other directions, can solve the problems of insufficient flexibility, limited stability of single-layer Kresling configuration units, etc., to enhance the scope of application, avoid bending, reduce The effect of small damage

Active Publication Date: 2022-07-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the process of realizing the present invention, the applicant found that the foldable structure represented by origami in the traditional technology has the following technical defects: the stable state of the single-layer Kresling configuration unit is limited, and the flexibility is insufficient

Method used

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  • Multi-stable-state adjustable vibration absorption device and preparation method thereof
  • Multi-stable-state adjustable vibration absorption device and preparation method thereof
  • Multi-stable-state adjustable vibration absorption device and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0106] Figure 4 This is a flow chart of a method for preparing a vibration absorbing device according to an embodiment of the present invention. Please refer to Figure 4 , the preparation method of the vibration absorbing device of this embodiment includes:

[0107]Step A, forming 4 pieces of two-dimensional planar materials with the same shape, such as figure 2 shown;

[0108] Take the first piece of two-dimensional planar material as an example, which includes:

[0109] ①Splicing isosceles triangle blocks PJ that form the bottom surface of the first Kresling configuration unit 1,1 ;

[0110] ②Splicing the parallelogram blocks PS that form the Kresling configuration unit of the first layer 1,1 ;

[0111] Each parallelogram block has creases on the diagonal, and the junction of the parallelogram block and the isosceles trapezoid block has creases; the parallelogram blocks can be opened or folded along their diagonal lines.

[0112] ③ The corresponding isosceles trap...

Embodiment approach

[0127] In the experiment, the length of the beam is L=800mm, the width is b=40mm, the thickness is t=5mm, the material is aluminum, the Young's modulus is 68.9GPa, the density is 2670kg / m3, and the Poisson's ratio is 0.33. The implementation is as follows:

[0128] The number of layers of the Kresling configuration unit is chosen to be 2 here to illustrate its multi-layer adjustment function. Next, determine the distribution of cutting and creases of the two-dimensional plane material, select the number of sides of the regular polygon N=4, and the radius of the circumscribed circle of the regular polygon R=28.3mm, so that the vibration absorbing unit can fit the vibration-isolated beam. The structure has multi-stable characteristics, the twist degree γ=0.9, the interlayer spacing h=12mm, and the interlayer ratio λ=0.6. The material parameters of the sheet are as follows: Young's modulus is 5GPa, density is 900kg / m 3 , the Poisson's ratio is 0.23. according to figure 2 Cut...

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Abstract

The invention provides a multistable adjustable vibration absorption device and a preparation method thereof. The multi-stable-state adjustable vibration absorption device comprises a balance weight disc and a vibration absorption device, the T layers of Kreshing configuration units are arranged below the balance weight disc and are sequentially connected, T is larger than or equal to 2, every two adjacent layers of Kreshing configuration units are connected through a table-shaped transition structure, one Kreshing configuration unit is defined by N parallelogram splicing blocks with the same shape, and the tth layer of transition structure is defined by N parallelogram splicing blocks with the same shape. The parallelogram splicing blocks are enclosed by N isosceles trapezoid splicing blocks with the same shape, and the joints of the parallelogram splicing blocks and the isosceles trapezoid splicing blocks are provided with creases. The vibration absorption device is simple in structure, light, compact, capable of being integrally machined and manufactured and convenient to install, has a very strong design space, can meet different working condition environments through adjustment of multiple geometric parameters, and has high practical value and popularization and application prospects.

Description

technical field [0001] The invention relates to the technical field of vibration absorption in the machinery industry, in particular to a multi-stable adjustable vibration absorption device and a preparation method thereof. Background technique [0002] Vibration suppression technology has important application value for improving the dynamic environment during equipment operation, reducing dynamic load and improving equipment reliability. With the continuous development of my country's aerospace industry, the tasks undertaken by spacecraft are becoming more and more complex, and they need to be designed to be lightweight. Therefore, the vibration suppression technical solution on the spacecraft should also move towards the direction of light weight and compactness. On the other hand, during the process of spacecraft from launch to orbit, the vibration environment is constantly changing, and the multi-frequency vibration also poses a great challenge to the design of the vib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/02F16F15/28
CPCF16F15/02F16F15/00F16F2228/04F16F2226/04F16F2224/02
Inventor 朱睿张铭凯马谦王倚天
Owner BEIJING INSTITUTE OF TECHNOLOGYGY