Variable-size tetrahedron unit lattice structure and preparation method thereof

A technology of lattice structure and tetrahedron, which is applied in the direction of additive manufacturing, building components, process efficiency improvement, etc., can solve the problem of fully enhancing the mechanical properties of lattice type-related structures, poor external load capacity of lattice structures, quality and elasticity Problems such as large modulus, to achieve less waste of time and economic costs, increase flexibility and freedom, and improve performance

Pending Publication Date: 2022-02-25
盐城辉途科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Most of the lattice structures used in the market are based on the Bragg lattice structures of crystals, such as face-centered cubic and body-centered cubic structures, and the size is often fixed. This design cannot give full play to this type of lattice structure. The advantages of mechanical properties; and traditional processing methods to process lattice structures, the structure does not fully enhance the mechanical properties of lattice type-

Method used

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  • Variable-size tetrahedron unit lattice structure and preparation method thereof
  • Variable-size tetrahedron unit lattice structure and preparation method thereof
  • Variable-size tetrahedron unit lattice structure and preparation method thereof

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Embodiment 1

[0038] see figure 1 and figure 2 , the present embodiment provides a lattice structure of variable-size tetrahedral units, which is characterized in that it includes a plurality of variable-size tetrahedral units arranged in space, and the variable-size tetrahedral units are composed of six variable-section edge rods connected to each other. The diameter of the cross-section edge rod increases or decreases continuously and gradually, and any two adjacent variable-size tetrahedral units share a variable-section edge rod, and its spatial arrangement is the stacking expansion of multiple variable-size tetrahedral units , to form a plurality of lattice layers vertically distributed, and adjacent lattice layers are connected to each other.

Embodiment 2

[0040] On the basis of the foregoing embodiments, the tetrahedron unit is a regular tetrahedron, and the lengths of the six variable-section edge rods are all equal. When the tetrahedron unit is a regular tetrahedron, and the length of the variable-section edge rod is set to be a , then the height of the variable-size tetrahedral element is

[0041] see image 3 and Figure 4 , the variable section edge rod is a symmetrical positive gradient edge rod or a symmetrical negative gradient edge rod, and the symmetrical positive gradient edge rod is a symmetrical edge with the largest radial dimension at both ends and the smallest radial dimension in the middle section Rods; symmetrical negative gradient edge rods are edge rods with the smallest radial dimension at both ends and the largest radial dimension in the middle section and are symmetrical; these two types of edge rods can deal with different deformations under different stress conditions In some cases, the deformation ...

Embodiment 3

[0048] On the basis of the above-mentioned embodiments, considering the stress of a single tetrahedron unit in one direction, the applied force is unidirectional compressive stress, and its stress situation is as follows Figure 5 As shown, the three edges (the bottom three edges) of the tetrahedral element perpendicular to the force direction will be mainly subjected to tensile stress and undergo tensile deformation, and the other three edges (upper three edges) will be mainly subjected to compressive stress to undergo compression deformation. Its deformation method will eventually cause the entire lattice structure to be compressed in the direction parallel to the pressure, and expand and deform in the direction perpendicular to the force.

[0049] In the vertical direction, that is, under the load parallel to the z-axis direction in the figure, the failure mode of the lattice structure is mainly the instability of the rods, and the stress of the structure is mainly concentra...

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Abstract

The invention relates to a variable-size tetrahedron unit lattice structure and a preparation method thereof. The lattice structure comprises a plurality of variable-size tetrahedron units which are spatially arranged, each variable-size tetrahedron unit is formed by connecting six variable-cross-section edge rods, and any two adjacent variable-size tetrahedron units share one variable-cross-section edge rod. The space arrangement is that the plurality of variable-size tetrahedron units are laminated, stacked and expanded to form a plurality of dot matrix layers which are vertically distributed, and the adjacent dot matrix layers are connected with each other. The lattice structure has the advantages of being high in structural stability and good in mechanical property, the lattice structure can be flexibly designed through the manufacturing method, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of lattice structures, in particular to a variable-size tetrahedron unit lattice structure and a preparation method thereof. Background technique [0002] The lattice structure solves the major problem of weight reduction in terms of light weight, but due to its complex structure, it is difficult to achieve through traditional manufacturing processes. The current production material is metal foil, which is traditionally produced by investment casting, forming or Manufactured by weaving method, this method of deformation processing often brings large internal stress to the workpiece, which is not conducive to the uniformity of structure and mechanical properties. At present, most traditional manufacturing methods of dot matrix include investment casting method, stamping forming method or wire weaving method and other methods. Among them, although the casting process of the lattice structure has realized auto...

Claims

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Application Information

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IPC IPC(8): F16S5/00B22F10/28B22F5/00B33Y10/00B33Y80/00
CPCF16S5/00B22F10/28B22F5/00B33Y10/00B33Y80/00Y02P10/25
Inventor 宋庆松沈以赴周益民李发亮张蓥韦云峰周心怡
Owner 盐城辉途科技有限公司
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