Multi-scale porous structure light weight modeling method oriented to 3D printing

A porous structure, 3D printing technology, applied in the field of computer-aided design, industrial design and manufacturing, can solve problems such as insufficient applicability and controllability, limited application range, easy to concentrate force, etc., to save printing time and printing materials , to ensure the effect of effectiveness

Active Publication Date: 2018-04-06
DALIAN UNIV OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

At present, the most widely used structures are simple porous structures, such as honeycomb structures and scaffold structures. The former structure has strong anisotropy and is not full

Method used

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  • Multi-scale porous structure light weight modeling method oriented to 3D printing
  • Multi-scale porous structure light weight modeling method oriented to 3D printing
  • Multi-scale porous structure light weight modeling method oriented to 3D printing

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Embodiment Construction

[0051] The present invention will be further described below in conjunction with specific examples.

[0052] The implementation of the present invention can be divided into several main steps of porous structure design, lightweight problem modeling and optimization, 3D printing and engineering force verification:

[0053] (1) Multi-scale porous structure design

[0054] Here, with φ P (p) Curved surface as an example to illustrate the multi-scale porous structure. Specifically, the corresponding multiscale porous structure surface Expressed as

[0055]

[0056]

[0057] Among them, T 1 (p)=T 2 (p)=T 3 (p) is isotropic control, control point c i is the uniformly sampled, tightly supported radial basis function

[0058]

[0059] Among them, the support radius α is related to the model, and the value here is 1 / 10 of the bounding box. After the control points and the constraints corresponding to the control points are given, the present invention can obtain th...

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Abstract

The invention discloses a multi-scale porous structure light weight modeling method oriented to 3D printing, and belongs to the field of computer aided design and industrial design manufacture. Undera condition that characteristic constraints and a stress condition are given, through a compact support radial basis function interpolation, a smooth multi-scale porous model is constructed; the multi-scale porous model is applied to light weight modeling, and a feasible solving solution is given; through the 3D printing, an entity experiment model is obtained and is subjected to engineering stress verification; according to engineering verification result analysis, a parameter is corrected to enable the hole change of an optimization model to more approach to practical stress requirements; and through the above loop iteration process, a light weight model which meets stress requirements is obtained. By use of the method, a light weight purpose of the entity model can be truly realized, sothat the light weight design optimization period of the model is greatly shortened, the porous structure obtained by design has the advantages of smoothness, full connectivity, controllability and quasi-self-supporting, and the effectiveness and the manufacturability of light weight can be accurately guaranteed.

Description

technical field [0001] The invention belongs to the fields of computer-aided design and industrial design and manufacturing, and relates to a 3D printing-oriented lightweight modeling method for multi-scale hole structures, which is applicable to the lightweight problems of general components, especially applicable to engineering lightweight design and manufacture. Background technique [0002] Lightweighting is one of the most important tasks in the field of modern manufacturing, and its main goal is to keep the mass as small as possible without compromising product usability. Limited by lightweight structure design and optimization methods, and manufacturing methods, traditional lightweight designs often have problems such as simple structure, insufficient applicability (functionality) and controllability (structure and force), and long design cycles. How to develop a lightweight structure with superior performance and controllability, and use efficient optimization metho...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06T17/10
CPCG06F30/20G06F2119/06G06T17/10
Inventor 王胜法胡江北李宝军罗钟铉
Owner DALIAN UNIV OF TECH
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