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A set of 3D hollow porous structures with isotropic properties

A hollow porous, isotropic technology, applied in instrumentation, computing, image data processing, etc., can solve the problem that structural anisotropy cannot meet application requirements, and achieve the effect of large optimization potential, high structural performance, and widening application fields.

Active Publication Date: 2021-08-31
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the fields of energy absorption and impact resistance, due to the uncertainty of the external impact load on the structure, the anisotropy of the structure cannot meet its application requirements

Method used

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  • A set of 3D hollow porous structures with isotropic properties
  • A set of 3D hollow porous structures with isotropic properties
  • A set of 3D hollow porous structures with isotropic properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] See Figure 1-8 , A set of three-dimensional porous structure having a hollow isotropic properties, including type IWP, a Gyroid type, Primitive type, type and S type Dimond minimal surface generated isotropic porous hollow structure, five kinds of porous hollow structure made of the same type infrastructure two different parameters generated by performing the Boolean operation on two particular parameters of the structure, a porous three-dimensional hollow structure, and the porous hollow structure having isotropic properties is obtained; at the same time, the five kinds of porous hollow structure having their unique structural features and performance, with different properties in different isotropic volume fraction.

[0060] Further, two different infrastructure functions as a level of a particular parameter set function, Boolean operations to generate expression of the porous hollow structure is F = min (F (x, y, z, t 1 ), - F (x, y, z, t 2 )); Where, F (x, y, z, t) repr...

Embodiment 2

[0073] Hollow porous structure characterized in that Gyroid presented on space the helical structure of the outer contour lines showing the spiral generated by the two Gyroid minimal surface structure type different parameters by Boolean operation; Gyroid minimal surface type unit cell structure the function of the expression is:

[0074]

[0075] Volume fraction is 0.2, the level of the parameter t 1 Was -2.4638 ± 0.1, the level of the parameter t 2 Of 3.714 ± 0.1, zener ratio 1.1108 ± 0.02;

[0076] Volume fraction is 0.3, the level of the parameter t 1 Was -4.0192 ± 0.1, the level of the parameter t 2 It was 5.1667 ± 0.1, zener ratio 1.1302 ± 0.02;

[0077] Volume fraction is 0.4, the level of the parameter t 1 Was -7.0533 ± 0.1, the level of the parameter t 2 It was 5.1375 ± 0.1, zener ratio 1.136 ± 0.02;

[0078] Volume fraction is 0.5, the level of the parameter t 1 Was -6.3741 ± 0.1, the level of the parameter t 2 It was 8.7823 ± 0.1, zener ratio 1.1273 ± 0.02;

[0079] V...

Embodiment 3

[0082] Primitive hollow porous structure characterized in that the six support to the positive direction on the spatial and six protruding surfaces are bonded, having a base structure identical thereto open holes in its internal structure, by two different parameters Primitive type minimal surface structure generated by the Boolean operation; Primitive type function of the expression minimal surface unit cell structure is:

[0083]

[0084] Volume fraction is 0.2, the level of the parameter t 1 Is -14.348 ± 0.1, the level of the parameter t 2 It was -6.0601 ± 0.1, zener ratio 0.9758 ± 0.02;

[0085] Volume fraction is 0.3, the level of the parameter t 1To -15.858 ± 0.1, horizontal parameter T 2 It is -3.3549 ± 0.1, Zenetbi is 0.9708 ± 0.02;

[0086] When the volume fraction is 0.4, the horizontal parameter t 1 To -17.24 ± 0.1, horizontal parameter T 2 It is -0.4946 ± 0.1, Zenetbie is 0.9603 ± 0.02;

[0087] When the volume fraction is 0.5, the horizontal parameter T 1 To -18.181...

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Abstract

The invention discloses a group of three-dimensional hollow porous structures with isotropic properties. The group of structures includes five different three-dimensional hollow porous structures, which are respectively generated by IWP type, Gyroid type, Primitive type, Dimond type and S-type minimal curved surfaces. isotropic hollow porous structure. The present invention obtains the topological configuration of the three-dimensional hollow porous structure under different volume fractions by performing Boolean operations on the minimum surface structure with specific parameters, and the obtained three-dimensional porous structure has isotropic properties, and is a three-dimensional isotropic porous structure The design provides a reference and has certain application prospects in the fields of lightweight, load bearing, energy absorption and impact resistance.

Description

Technical field [0001] The present invention belongs to the field of structural optimization techniques, and more particularly to each tolerance hollow porous structure. Background technique [0002] In the fields such as capability and impact, the anisotropy of the structure cannot satisfy its application needs due to uncertainty of the external impact load of the structure. In order to avoid structural damage caused by uncertainty of the external load, researchers and designers began to focus on the interearity optimization of the structure. The alliance of the structure ensures unity of structures in the various directions, which can effectively ensure that the structure does not cause local damage due to the lack of performance of the structure due to the external impact load. [0003] As a lightweight high-performance structure, a wide range of applications such as lightweight, bearing and suction energy, using structural optimization methods, combining the hollow structure ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/10G06T17/30
CPCG06T17/10G06T17/30
Inventor 付君健孙鹏飞罗明亮张跃杜义贤田启华
Owner CHINA THREE GORGES UNIV
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