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Multi-layer noise elimination/vibration reduction structure and method for manufacturing noise elimination/vibration reduction structure through 3D printing technology

A vibration-damping structure and technology, which is applied in the direction of gas shock absorbers, additive processing, etc., can solve the problems of narrow application fields of noise-absorbing/vibration-damping structures, and achieve a large sound absorption coefficient, not easy to aging, and broad application prospects Effect

Inactive Publication Date: 2016-04-06
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of narrow applicable fields of conventional noise-absorbing / vibration-absorbing structural materials, provide a multi-layer noise-absorbing / vibration-absorbing structure and a method for manufacturing the noise-absorbing / vibration-absorbing structure using 3D printing technology

Method used

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  • Multi-layer noise elimination/vibration reduction structure and method for manufacturing noise elimination/vibration reduction structure through 3D printing technology

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specific Embodiment approach 1

[0015] Specific implementation mode one: combine figure 1 Describe this embodiment mode, a kind of multi-layer noise elimination / vibration reduction structure described in this embodiment mode, comprises bottom board (1), two side boards (2), multi-layer vertical partition board (3) of different heights and multiple A transverse partition (4), the bottom plate (1), side panels (2), longitudinal partitions (3) and transverse partitions (4) are all metal-based materials, and the side panels (2) , The longitudinal partition plate (3) and the transverse partition plate (4) are provided with a plurality of micropores;

[0016] Two side plates (2) are located on both sides of the bottom plate (1);

[0017] The longitudinal partition boards (3) are parallel to the side boards (2), and each layer of longitudinal partition boards (3) is equally spaced between two side boards (2), and between two adjacent layers of longitudinal partition boards (3) Between them is a transverse partiti...

specific Embodiment approach 2

[0019] Specific implementation mode two: combination figure 1 Describe this embodiment. This embodiment is a further limitation of the multi-layer noise reduction / vibration reduction structure described in Embodiment 1. In this embodiment, the heights of the multi-layer cavities are sequentially decreased and the widths are sequentially increased. .

specific Embodiment approach 3

[0020] Specific Embodiment 3: This embodiment is a further limitation of the multi-layer noise reduction / vibration reduction structure described in Embodiments 1 and 2. In this embodiment, the side panels (2), longitudinal partitions (3) And the microholes on the transverse partition plate (4) include circular holes and non-circular holes, the aperture of the circular holes is less than 1 or equal to mm, and the single hole area of ​​the non-circular holes is less than or equal to 0.785mm 2 , the hole spacing is less than or equal to 17mm, and the porosity is 1%-10%.

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Abstract

The invention provides a multi-layer noise elimination / vibration reduction structure and a method for manufacturing the noise elimination / vibration reduction structure through the 3D printing technology, and relates to the field of material increase manufacture, vibration reduction and noise elimination. The multi-layer noise elimination / vibration reduction structure aims at solving the problem that a conventional noise elimination / vibration reduction structure material is narrow in application field. The noise elimination / vibration reduction structure is made from a metal base material. Except a base plate, micropores are formed in other components. Each layer of longitudinal partition plates are distributed between two side plates at equal intervals. Transverse partition plates are arranged between every two adjacent layers of longitudinal partition plates, and the height and width of a formed multi-layer cavity each change in a gradient mode. The method includes the steps of firstly, designing the size of the noise elimination / vibration reduction structure through computer simulation software according to actual working conditions; secondly, depositing molten powder on the surface of the base plate through the 3D printing technology, and printing the side plates, the longitudinal partition plates and the transverse partition plates. The noise elimination / vibration reduction structure is wide in application range and is formed at a time through 3D printing. The noise elimination / vibration reduction structure and the method are suitable for various fields of construction, navigation, aircrafts, power devices, transportation means and the like.

Description

technical field [0001] The invention belongs to the field of additive manufacturing and vibration reduction and noise reduction. Background technique [0002] With the development of industry, people have higher and higher demands on sound-absorbing / vibration-absorbing materials. Although sound-absorbing / vibration-absorbing structural materials are widely used in modern society, there are few general-purpose sound-absorbing / vibration-absorbing materials. See. Now the widely used sound-absorbing / vibration-absorbing materials are rubber products such as butyl rubber, fiber products such as fiber blankets and foam metal, etc., but the existing sound-absorbing and vibration-absorbing materials are limited in quite a few fields, such as rubber materials Poor impact resistance, rapid aging in harsh environments, and loss of noise reduction / vibration reduction capabilities; fiber noise reduction / vibration reduction materials have poor fire resistance and cannot be used in water en...

Claims

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Application Information

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IPC IPC(8): B22F3/11B22F7/08B33Y10/00B33Y80/00F16F9/02
CPCB22F3/1103B22F7/08F16F9/02
Inventor 金国刘珂璟崔秀芳蔡召兵卢冰文孙越
Owner HARBIN ENG UNIV
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