Variant gradient lattice structure based on additive manufacturing

A lattice structure and additive manufacturing technology, applied in the field of lattice structures, can solve the problems affecting the bearing characteristics of the overall structure, prominent stress concentration effect of nodes, large size differences, etc., and achieve excellent mechanical properties, strong achievability, The effect of excellent energy absorption capacity
CN111895015BActive Publication Date: 2022-07-08CHONGQING UNIV +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2022-07-08

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Abstract

The invention discloses a variant gradient lattice structure based on additive manufacturing, which includes a plurality of variant gradient lattice layers that are repeatedly stacked and connected to each other; the variant gradient lattice layer includes a plurality of variant gradient lattice layers that are repeatedly arranged and interconnected. A body gradient unit cell array; the variant gradient unit cell array includes a plurality of lattice unit cells that are repeatedly arranged and interconnected in a single direction; the lattice unit cells are carried out in one or more directions from the original lattice unit cells The size is extended and formed; the lattice structure of the present invention improves the structural mutation problem at the connection of the existing gradient structure. While ensuring its high-strength bearing capacity, it improves its energy absorption capacity, so that it has better impact resistance properties.
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Description

technical field

[0001] The invention relates to a lattice structure, in particular to a gradient lattice structure for additive manufacturing and a design method thereof. The structure is stable in connection, has a mechanical response different from the traditional lattice structure, and has the advantages of high strength, high stiffness and excellent energy absorption capacity. Background technique

[0002] Lattice structure plays an important role in the lightweight design of aerospace, automobile and other fields due to its advantages of light weight, high specific strength and high specific stiffness. However, the complex internal microstructure of lattice structures poses a great challenge to traditional fabrication processes. With the development of additive manufacturing technology, it has become a trend to apply it to the fabrication of lattice structures. It can not only ensure the precision and forming quality of the internal complex microstructure, but also eff...

Claims

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