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Semi-perforated plate lattice metamaterial and additive manufacturing method thereof

An additive manufacturing, semi-opening technology, applied in the field of metamaterials, can solve problems such as process constraints, and achieve the effects of enhancing the control range, facilitating forming, and high specific stiffness

Active Publication Date: 2022-03-15
HUAZHONG UNIV OF SCI & TECH +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, there are many process constraints faced by the SLM process

Method used

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  • Semi-perforated plate lattice metamaterial and additive manufacturing method thereof
  • Semi-perforated plate lattice metamaterial and additive manufacturing method thereof
  • Semi-perforated plate lattice metamaterial and additive manufacturing method thereof

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Embodiment Construction

[0036] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0037] see Figure 1 to Figure 4 , compared with the traditional truss lattice structure, the semi-opened lattice metamaterial in the present invention has more excellent mechanical properties. Compared with traditional plate metamaterials, spherical holes are introduced at the vertices and centers of the unit cells, which not only can quickly remove raw materials such as residual metal pow...

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Abstract

The invention discloses a semi-perforated plate lattice metamaterial and an additive manufacturing method thereof, and belongs to the related technical field of metamaterials, the semi-perforated plate lattice metamaterial is of a face-centered cubic (FCC) structure and is formed by combining periodic unit cells, and the size of the unit cells can be adjusted according to requirements; each unit cell structure is formed by combining eight same hollow regular tetrahedrons according to a certain rule, each regular tetrahedron is defined by four thin plates, and the thickness of the thin plates can be adjusted according to requirements; the vertex of each regular tetrahedron is subjected to trepanning treatment to form a semi-trepanning structure, and the pore size can be adjusted according to requirements. According to the method, the design freedom degree is improved, the process constraint problem in the forming process of additive manufacturing technologies such as laser powder bed melting and photocuring is solved, therefore, the structural parameters of the plate lattice metamaterial can be more flexibly regulated and controlled, and forming is conducted through the additive manufacturing technologies such as laser powder bed melting and photocuring.

Description

technical field [0001] The invention belongs to the technical field related to metamaterials, and more specifically relates to a semi-open-hole plate metamaterial and an additive manufacturing method thereof. Background technique [0002] Mechanical metamaterials (Mechanical Metamaterials, MMs) refer to new materials with super-conventional or anti-conventional mechanical properties through the ingenious design of the construction of micro-structural units. Metamaterials can play an important role in many fields. However, due to the extremely complex microstructure of mechanical metamaterials, traditional material processing techniques cannot realize their integrated forming, which severely limits their application and promotion. [0003] Additive Manufacturing (AM) is an emerging manufacturing technology in recent years. It is based on the discrete-accumulation principle, driven by the three-dimensional data of the component, and the component is integrally formed to achie...

Claims

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Application Information

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IPC IPC(8): B22F10/28B22F5/10B22F10/31B22F10/85B33Y10/00B33Y50/02B33Y80/00
CPCB22F10/28B22F5/10B22F10/31B22F10/85B33Y10/00B33Y50/02B33Y80/00Y02P10/25
Inventor 宋波王晓波张磊范军翔祁俊峰李敬洋史玉升
Owner HUAZHONG UNIV OF SCI & TECH
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