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Two-phase medium pentamode material based on additive manufacturing and manufacturing method for two-phase medium pentamode material

A dual-phase medium, additive manufacturing technology, applied in the field of additive manufacturing, can solve the problems of limiting the acoustic and mechanical properties of five-mode materials, ineffectiveness, poor forming accuracy, etc., to achieve strong operability and applicability, Conducive to the promotion and application, the effect of reducing the production cost

Inactive Publication Date: 2018-03-30
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] However, since the development of pentamode materials has only started in recent years, most of them are theoretical studies, and the existing pentamode material structures are all single-phase media
Since the equivalent elastic modulus and equivalent density of the microstructure of the five-mode materials involved have certain errors from the target values, the frequency range of the action is narrow (below 60kHz), and it can only be used in the low frequency range, and in the high frequency range. Can't work
The rise of additive manufacturing technology, which can form complex structural parts, provides technical support for the realization of five-mode materials; additive manufacturing can form components with complex shapes, but the forming accuracy is poor, and the single forming material limits the acoustics of five-mode materials. and mechanical properties

Method used

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  • Two-phase medium pentamode material based on additive manufacturing and manufacturing method for two-phase medium pentamode material
  • Two-phase medium pentamode material based on additive manufacturing and manufacturing method for two-phase medium pentamode material
  • Two-phase medium pentamode material based on additive manufacturing and manufacturing method for two-phase medium pentamode material

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Embodiment 1

[0042] see figure 2 , The first embodiment of the present invention uses laser selective melting technology and fused deposition technology to prepare and shape titanium alloy / nylon dual-phase medium five-mode material. Ti 6 Al 4 V is a near-alpha titanium alloy, which is widely used in deep-sea equipment due to its ultra-high specific strength and excellent corrosion resistance; Ti 6 Al 4 As the matrix of five-mode materials, V can further improve the mechanical properties and corrosion resistance of functional materials, and due to the acoustic stealth performance of five-mode materials, it can make deep-sea equipment have good concealment when applied to the surface of equipment. In this example, the matrix adopts the evolution form of the honeycomb model, the nodes are circular, the radius is r, the length of the connecting rod is a, and the width is b. The second phase medium is nylon material with a melting point of 253°C. It is filled with the matrix structure so th...

Embodiment 2

[0051] see image 3 , The second embodiment of the present invention uses laser selective melting technology and fused deposition technology to prepare and shape magnesium alloy / nylon dual-phase medium five-mode material. Among them, AlSi 10 Mg has good manufacturability, low density, and good corrosion resistance. It has good adaptability in the field of deep-sea equipment. The products formed by SLM process have good dimensional accuracy and surface quality, which ensures the accuracy of the formed size. In this example, the matrix adopts the evolution form of the honeycomb model, the nodes are circular, the radius is r, the length of the connecting rod is a, and the width is b. The second phase medium is nylon material with a melting point of 253°C. It is shaped by the matrix structure, and the structure presents a snowflake shape with width c. Under this condition, the second embodiment of the present invention produces AlSi 10 The main steps of the Mg / nylon dual-phase ...

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Abstract

The invention belongs to the field of additive manufacturing correlation techniques, and discloses a two-phase medium pentamode material based on additive manufacturing and a manufacturing method forthe two-phase medium pentamode material. The method comprises the following steps: (1) establishing a three-dimensional CAD model of a pentamode material matrix, and guiding out the three-dimensionalCAD model of the pentamode material matrix by an STL file format; and (2) forming the pentamode material matrix by using a laser selected area melting method according to the STL file, and carrying out surface treatment on the matrix; and (3) melting and depositing a high polymer material into the matrix by a melting and depositing forming method to obtain the two-phase medium pentamode material.The two-phase medium pentamode material based on additive manufacturing is high in forming speed and high in material utilization rate; the cost is reduced; and the application range is expanded.

Description

technical field [0001] The invention belongs to the technical field related to additive manufacturing, and more specifically relates to a dual-phase dielectric five-mode material based on additive manufacturing and a manufacturing method thereof. Background technique [0002] Metamaterials are a new class of artificial synthetic materials, usually arranged by periodic or non-periodic artificial microstructures. Pentamode Material (PM, Pentamode Material) is a new type of metamaterial, and 5 of the 6 eigenvalues ​​in the elastic modulus matrix of the material are 0. Pentamode materials were first proposed in 1995, which can decouple the compression deformation and shear deformation of solids. The elastic properties of pentamode materials are similar to those of liquids, so they are also called superfluids. In terms of specific implementation, it can be realized by designing a structure with a larger ratio of bulk modulus to shear modulus (B / G). Since the effective shear mo...

Claims

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Application Information

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IPC IPC(8): B29C64/118B22F3/105B33Y10/00B33Y70/00
CPCB33Y10/00B33Y70/00B22F10/00B22F10/362B22F10/62B22F10/36B22F10/366B22F10/28B22F10/38Y02P10/25
Inventor 宋波张磊史玉升
Owner HUAZHONG UNIV OF SCI & TECH
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