Lattice structure with high energy dissipation capacity based on laser additive manufacturing

A lattice structure and laser additive technology, which is applied in the direction of additive processing, special data processing applications, instruments, etc., can solve the problems of uneven material performance and difficult quality control, and achieve the effect of rapid and accurate preparation

Inactive Publication Date: 2019-04-16
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the disorder of the traditional lightweight porous materials and the limitations of the preparation process, it is easy to cause uneven material properties and difficult to control the quality

Method used

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  • Lattice structure with high energy dissipation capacity based on laser additive manufacturing
  • Lattice structure with high energy dissipation capacity based on laser additive manufacturing

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Effect test

Embodiment 1

[0019] A lattice structure with high energy dissipation capability based on laser additive manufacturing. Determine the length of the lattice structure as 120mm, width 40mm, and height 10mm according to the needs, and then array multiple cell structures along three directions to obtain the required lattice structure.

[0020] The construction method of the cell structure is as follows:

[0021] Step 1. Given a virtual cube arbitrarily, the side length of the virtual cube is 5mm; the diameter is 1mm;

[0022] Step 2, construct 8 regular tetrahedrons; choose the vertex of a cube as a vertex of the regular tetrahedron; the center points of the three faces of the cube adjacent to the vertex are the other three vertices of the regular tetrahedron; repeat In this step, 8 regular tetrahedrons can be constructed;

[0023] Step 3: Connect the center of gravity of each regular tetrahedron to the vertices to obtain 4 cell rods; repeat this step to obtain 32 cell rods; then the cell str...

Embodiment 2

[0027] A lattice structure with high energy dissipation capability based on laser additive manufacturing. Determine the length of the lattice structure as 120mm, width 40mm, and height 10mm according to the needs, and then array multiple cell structures along three directions to obtain the required lattice structure.

[0028] The construction method of the cell structure is as follows:

[0029] Step 1. Given a virtual cube arbitrarily, the side length of the virtual cube is 10mm; the diameter is 1.5mm;

[0030] Step 2, construct 8 regular tetrahedrons; choose the vertex of a cube as a vertex of the regular tetrahedron; the center points of the three faces of the cube adjacent to the vertex are the other three vertices of the regular tetrahedron; repeat In this step, 8 regular tetrahedrons can be constructed;

[0031] Step 3: Connect the center of gravity of each regular tetrahedron to the vertices to obtain 4 cell rods; repeat this step to obtain 32 cell rods; then the cell ...

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Abstract

The invention relates to a lattice structure with high energy dissipation capacity based on laser additive manufacturing, and belongs to the technical field of vibration and noise reduction engineering. According to the dot matrix structure, the length L, the width W and the height H of the dot matrix structure are determined according to needs, and then a plurality of cell element structures arearrayed in three directions to obtain the needed dot matrix structure. According to the lattice structure with the high-energy dissipation capacity based on laser additive manufacturing, due to the specific periodicity, when elastic waves are propagated in the lattice structure, the elastic waves in some frequency ranges cannot be propagated, the elastic wave band gap characteristic enables the lattice structure to have the high-energy dissipation capacity, and the effects of vibration reduction and noise reduction are achieved. The dot matrix structure is prepared through the laser additive manufacturing technology, and rapid and accurate preparation can be achieved.

Description

technical field [0001] The invention relates to a lattice structure with high energy dissipation capability based on laser additive manufacturing, and belongs to the technical field of vibration reduction and noise reduction engineering. Background technique [0002] With the rapid development of aerospace science and technology industry, lightweight porous materials with physical light weight, high specific area, high strength and toughness in mechanics, strong ability to absorb mechanical energy, easy heat dissipation in heat transfer, good heat insulation and other performance advantages are considered to be The most promising advanced structural materials. As a typical lightweight porous material, the lattice structure can realize the multifunctional characteristics of load bearing and thermal control, stealth, energy absorption, actuation, energy storage, and damping in one due to its unique periodicity and porosity. The rapid development of laser additive manufacturin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50B33Y80/00
CPCB33Y80/00G06F30/20
Inventor 王国丽栾贻东田振威黄猷嘉刘树辉
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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