Variable unit cell size gradient lattice structure with transition layers

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...

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

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