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Variable unit cell size gradient lattice structure with transition layers

A technology of lattice structure and transition layer, applied in the direction of building components, etc., can solve problems such as poor mechanical properties, and achieve the effect of improving mechanical properties, excellent mechanical properties, and flexible design

Active Publication Date: 2019-04-05
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of poor mechanical properties of the existing gradient lattice structure, the present invention provides a variable unit cell size gradient lattice structure with a transition layer

Method used

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  • Variable unit cell size gradient lattice structure with transition layers
  • Variable unit cell size gradient lattice structure with transition layers
  • Variable unit cell size gradient lattice structure with transition layers

Examples

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Embodiment Construction

[0025] The following examples refer to Figure 1-12 .

[0026] figure 1 When the hexagonal hyperboloid lattice unit cell is extended in the form of (6,6,6) in the planar mosaic in the xoy plane, the schematic diagram of the unit cell connection mode of the transition layer a; refer to figure 1 , nodes 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 are located on the same height plane, nodes 13, 14, 15, 16, 17, 18, 19 are located on the same height plane ; Among them, nodes 1, 2, 3, 4, 5, and 6 are six vertices of a regular hexagon with a side length of 2L, and nodes 7, 8, 9, 10, 11, and 12 are regular hexagons with a side length of L. The six vertices of the polygon, nodes 13, 14, 15, 16, 17, and 18 are the length of one side The six vertices of the regular hexagon; the rod formed by connecting node 1 and node 19, the rod formed by connecting node 2 and node 19, the rod formed by connecting node 3 and node 19, the rod formed by connecting node 4 and node The rod formed by connecti...

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Abstract

The invention discloses a variable unit cell size gradient lattice structure with transition layers. The variable unit cell size gradient lattice structure is used for solving the technical problem that mechanical properties of an existing gradient lattice structure are poor. According to the technical scheme, N layers of hexagonal double-curved-surface lattice structure bodies and the <N-1> layers of transition layers are included, and all the layers of hexagonal double-curved-surface lattice structure bodies are formed in the mode that hexagonal double-curved-surface lattice unit cells extend in xoy planes correspondingly; all the transition layers a are connected with hexagonal double-curved-surface lattice layers b and hexagonal double-curved-surface lattice layers c correspondingly; and the unit cell size of the hexagonal double-curved-surface lattice layers b is 2 L, the unit cell size of the hexagonal double-curved-surface lattice layers c is L, and the height of the transitionlayers a is H. By arranging each transition layer between the corresponding two lattice structure bodies with the different unit cell sizes, the section size of lattice unit cell rod pieces and the lattice unit cell size can be changed simultaneously, thus influences of the lattice unit cell size and the rod piece section size on the overall property of the structure can be considered simultaneously during structure design, and the purpose of improving the mechanical properties is achieved.

Description

technical field [0001] The invention relates to a gradient lattice structure, in particular to a variable unit cell size gradient lattice structure with a transition layer. Background technique [0002] The lattice structure has excellent characteristics such as light weight, high specific stiffness, high specific strength, sound absorption and heat insulation, and is increasingly used in automobiles, ships, aerospace and other fields. The gradient lattice structure makes the overall structure have more excellent performance through the design of the lattice unit cell configuration. According to the gradient lattice structure of the prior art, such as the gradient lattice structure described in CN107498948A, it controls its relative density by changing the thickness of the unit cell rods in each layer of lattice, which improves the impact resistance of the structure and reaches the point The macroscopic physical parameters of the array structure change gradually with the sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16S5/00
CPCF16S5/00
Inventor 高彤张卫红石建雄孟亮
Owner NORTHWESTERN POLYTECHNICAL UNIV
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