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Variable-unit-cell-size opposite-pyramid gradient lattice structure with transition layers

A lattice structure, pyramid technology, applied in the direction of slender elements, building elements, etc., can solve problems such as poor mechanical properties, and achieve the effects of lightweight design, flexible design, and excellent mechanical properties

Active Publication Date: 2019-01-08
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of poor mechanical properties of the existing gradient lattice structure, the present invention provides a gradient lattice structure with variable unit cell size and pyramid with a transition layer

Method used

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  • Variable-unit-cell-size opposite-pyramid gradient lattice structure with transition layers
  • Variable-unit-cell-size opposite-pyramid gradient lattice structure with transition layers
  • Variable-unit-cell-size opposite-pyramid gradient lattice structure with transition layers

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Embodiment Construction

[0015] The following examples refer to Figure 1~3 .

[0016] The variable unit cell size-to-pyramid gradient lattice structure with a transition layer of the present invention includes an N-layer-to-pyramid lattice structure and an N-1 transition layer. Among them, each layer of the pyramid lattice structure is formed by the extension of the pyramid lattice unit cell in the xoy plane; each transition layer a is respectively connected to the pyramid lattice layer b and the pyramid lattice layer c, and the pyramid lattice The unit cell size of layer b is 2L, the unit cell size of pyramid lattice layer c is L, and the height of transition layer a unit cell is H.

[0017] A transition layer a unit cell respectively connects a pair of pyramidal lattice layer b unit cells with a side length of 2L and four pairs of pyramidal lattice layer c unit cells with a side length of L; among them, nodes 10, 11, 12, 13 Located on the same height plane, nodes 1, 2, 3, 4, 5, 6, 7, 8, and 9 are...

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Abstract

The invention discloses a variable-unit-cell-size opposite-pyramid gradient lattice structure with transition layers. The variable-unit-cell-size opposite-pyramid gradient lattice structure with the transition layers are used for solving the technical problem that an existing gradient lattice structure is poor in mechanical performance. According to the technical scheme, the variable-unit-cell-size opposite-pyramid gradient lattice structure with the transition layers comprises N layers of opposite-pyramid lattice structures and N-1 transition layers, wherein each layer of opposite-pyramid lattice structures are formed by opposite-pyramid lattice unit cells in the xoy plane by means of prolongation, and each transition layer a is connected with an opposite-pyramid lattice layer b and an opposite-pyramid lattice layer c, the unit cell size of each opposite-pyramid lattice layer b is 2L, the unit cell size of each opposite-pyramid lattice layer c is L, and the height of each transition layer a is H. According to the variable-unit-cell-size opposite-pyramid gradient lattice structure with the transition layers, the transition layer is arranged between two layers of different unit cellsizes of opposite-pyramid lattice structures, the sectional dimension of each lattice unit cell rod piece and the lattice unit cell size can be changed at the same time, so that when the structure isdesigned, the influence of the lattice unit cell size and the influence of the sectional dimension of each rod piece on the overall performance of the structure can be taken into consideration at thesame time, and the purpose of improving the mechanical performance is achieved.

Description

technical field [0001] The invention relates to a gradient lattice structure, in particular to a variable unit cell size-to-pyramid 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. [0003] The document "Chinese Patent Application Publication No. CN107498948A" discloses a gradient lattice structure. The gradient lattice structure controls the relative density by changing the thickness of the unit cells in the lattice of each layer, improves the impact resistance of the structure, and achieves the purpose that the macroscopic physical parameters of the lattice st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16S3/08
CPCF16S3/08
Inventor 高彤张卫红石建雄孟亮
Owner NORTHWESTERN POLYTECHNICAL UNIV
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