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

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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, pro

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Specific embodiment one: combination figure 1 To illustrate this embodiment, the multi-layer noise reduction / vibration damping structure described in this embodiment includes a bottom plate (1), two side plates (2), multiple layers of longitudinal partition plates (3) of different heights, and multiple A horizontal partition plate (4), the bottom plate (1), side plate (2), longitudinal partition plate (3) and horizontal partition plate (4) are all metal-based materials, and the side plates (2) , Both the longitudinal partition plate (3) and the transverse partition plate (4) are provided with multiple micro holes;

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

[0017] The longitudinal partition plate (3) is parallel to the side plate (2), and each layer of longitudinal partition plate (3) is equally spaced between the two side plates (2), and the two adjacent layers of longitudinal partition plate (3) The space is a horizontal partition pl...

Example Embodiment

[0019] Specific implementation manner two: combination figure 1 To explain this embodiment, this embodiment is a further limitation to the multi-layer noise reduction / vibration damping structure described in Embodiment 1. In this embodiment, the height of the multi-layer cavity decreases successively, and the width increases successively. .

Example Embodiment

[0020] Specific embodiment three: this embodiment is a further limitation of the multi-layer noise reduction / vibration damping structure described in the first and second embodiments. In this embodiment, the side plate (2) and the longitudinal partition plate (3) And the micro-holes on the transverse partition plate (4) include round holes and non-round holes, the hole diameter of the round holes is less than 1 or equal to mm, and the single hole area of ​​the non-round holes is less than or equal to 0.785 mm 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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