Heterogeneous bionic structure design and directional energy deposition additive manufacturing method thereof

A technology of energy deposition and additive manufacturing, applied in the field of additive manufacturing, can solve problems such as insufficient manufacturing structure configuration, and achieve the effect of high degree of freedom

Pending Publication Date: 2022-07-08
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Structures in nature often have the characteristics of heterogeneous material distribution, complex geometry, and multifunctional integration optimization. From a manufacturing point of view, the capabilities of traditional processing technologies are not sufficient to fabricate these complex structural configurations.

Method used

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  • Heterogeneous bionic structure design and directional energy deposition additive manufacturing method thereof
  • Heterogeneous bionic structure design and directional energy deposition additive manufacturing method thereof
  • Heterogeneous bionic structure design and directional energy deposition additive manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0054] Example 1: as figure 1 As shown, a schematic flow chart of a heterogeneous biomimetic structure design and a directional energy deposition additive manufacturing method, the main steps of the present invention include:

[0055] 1) Obtain the structural features and micro-section features of the natural structure and establish a heterogeneous bionic structure model. The gradient structure inspired by bamboo can make the interface between the two materials combine to blur or disappear, so that the performance changes with the composition and structure. Gradient change, avoiding the problems of sudden performance, stress concentration, mismatch, etc. Its heterogeneous bionic gradient structure model is such as figure 2 shown;

[0056] 2) According to the actual bearing environment and working conditions, determine the working characteristics, functional requirements and performance constraints required for heterogeneous metal components. For aerospace components, ultra-h...

Embodiment 2

[0067] Embodiment 2: A schematic flow diagram of a heterogeneous biomimetic structure design and a directed energy deposition additive manufacturing method, such as figure 1 As shown, the main steps of the present invention include:

[0068] 1) Obtain the structural characteristics and micro-section characteristics of natural structures and establish a heterogeneous bionic structure model. The layered structure inspired by shells has the characteristics of high toughness and high strength, which can improve the overall performance of heterogeneous components. Biomimetic hierarchical structure models such as image 3 shown;

[0069] 2) According to the actual load-bearing environment and working conditions, determine the working characteristics, functional requirements and performance constraints required for heterogeneous metal components. For gear components, it should meet the working conditions in harsh environments such as wear resistance and corrosion resistance. ;

[...

Embodiment 3

[0080] Example 3: A schematic flowchart of the design of a heterogeneous biomimetic structure and its directional energy deposition additive manufacturing method, such as figure 1 As shown, the main steps of the present invention include:

[0081] 1) Obtain the structural features and micro-section features of natural structures and establish a heterogeneous bionic structure model. The interlocking structure inspired by beetle elytra can improve the toughness, impact resistance and extrusion resistance of heterogeneous components. Interlocking structure models such as Figure 4 shown;

[0082] 2) According to the actual bearing environment and working conditions, determine the working condition characteristics, functional requirements and performance constraints required for heterogeneous metal components. For nuclear power chemical components, it should meet the work in harsh environments such as high temperature resistance and corrosion resistance. condition;

[0083] 3) ...

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Abstract

The invention discloses a heterogeneous bionic structure design and a directional energy deposition additive manufacturing method thereof, and the method comprises the steps: obtaining structural features and microscopic section features of a natural structure, and generating a heterogeneous bionic component three-dimensional model; selecting a heterogeneous bionic structure model and a heterogeneous metal material according to working condition characteristics, functional requirements and performance constraint conditions of the heterogeneous bionic component; the heterogeneous bionic structure is composed of a gradient structure and / or a layered structure and / or an interlocking structure with a bionic structure; performing finite element analysis on the three-dimensional model of the heterogeneous bionic component to generate layered contour data and a deposition working path; according to the layered contour data and the deposition working path, the deposited metal materials are mixed and / or switched and changed in real time through a feeding device, directional energy deposition forming is carried out layer by layer, and the heterogeneous bionic component with the bionic structure is prepared; the method has the characteristics of integration, customizability, high degree of freedom and the like, and can effectively control the connection strength, forming characteristics and functional characteristics between dissimilar metals.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular, to a design of a heterogeneous biomimetic structure and a method for additive manufacturing by directed energy deposition. Background technique [0002] After billions of years of survival competition and natural selection, natural organisms have evolved their external and internal structures into nearly perfect system functions. By studying the key structural features of biological systems, new ideas are provided for solving technical problems to meet the increasing demands of modern industry. Organisms with special materials are distributed in the most needed functional areas. This is the result of the survival of the fittest and the survival of the fittest in nature, and it is also the optimal form of material structure. Applying biomimetic structures to heterogeneous metal components can bring more excellent functional properties to the components. [0003] Str...

Claims

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Application Information

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IPC IPC(8): B22F10/28B22F10/366B33Y10/00
CPCB22F10/28B22F10/366B33Y10/00Y02P10/25
Inventor 张志辉李星燃康忠雄刘高峰陈志凯蔡晶余晨辉姜鹏飞
Owner JILIN UNIV
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