Three-dimensional printed object structure optimizing algorithm based on stress analysis

A technology of 3D printing and stress analysis, applied in the direction of digital output to printing unit, etc., can solve problems such as topology simplification, object damage, complex force analysis, etc., and achieve the effect of model simplification

Active Publication Date: 2015-12-30
GUANGDONG SANWEIJIA INFORMATION TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0005] The digital model can exist stably in the computer, but the 3D printed objects are often damaged due to difficulty in adapting to various force requirements in the real world
For some objects with complex topology and many thin rod structures, the force analysis is very complicated, and some thinner parts cannot even be printed by a 3D printer
Existing methods for optimizing the structure of 3D printed objects cannot optimize the strength of the object well, and cannot adaptively simplify the topology

Method used

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  • Three-dimensional printed object structure optimizing algorithm based on stress analysis
  • Three-dimensional printed object structure optimizing algorithm based on stress analysis
  • Three-dimensional printed object structure optimizing algorithm based on stress analysis

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Embodiment Construction

[0038] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings.

[0039] The invention provides an algorithm for generating a model with optimal strength and topological structure under given printing materials and stress conditions. The algorithm transforms the model into a non-uniform frame structure, and adaptively optimizes the radius and number of non-uniform rods. In order to achieve physical force requirements, volume constraints and topology simplification, the algorithm finally generates a printable solid model. For a given model, the present invention is able to generate an optimal model that can be used for direct printing.

[0040] Such as figure 1 Shown is an algorithm flow for optimizing the structure of a 3D printed object based on stress analysis in the present invention, including:

[0041] 1. Obtain the 3D mesh model of the printed object, and t...

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Abstract

The invention discloses a three-dimensional printed object structure optimizing algorithm based on stress analysis. The algorithm comprises steps as follows: a three-dimensional network model of a printed object is acquired, and a user sets force distribution and printed material size constraints; printing parameters of the three-dimensional model are optimized automatically, a heterogeneous frame structure is generated automatically through input by the user, and initial parameters are determined and optimized; a solid model is generated according to optimized printing parameters; three-dimensional printing is performed on the generated solid model, and a three-dimensional printing model is established with physical properties of a printed material, printing conditions and material sizes of the printed object used as constraints and stress minimization of the printing model used as the target. With the adoption of the algorithm, adaptive optimization of the scaling ratio and the number in a frame can be realized, the strength requirement for the object is guaranteed under the condition that the regulated material size is used, and besides, the model can be simplified; the strength of the printed object is improved through parameter optimization and the topology structure of the object is simplified.

Description

technical field [0001] The invention relates to a three-dimensional printing technology, in particular to an algorithm for optimizing the structure of a three-dimensional printing object based on stress analysis. Background technique [0002] Three-dimensional printing technology is a kind of rapid prototyping technology, also known as additive manufacturing. Based on digital model files, the technology uses discrete materials (such as powdered metal or plastic) to process physical objects through layer-by-layer accumulation and bonding. [0003] 3D printing technology can manufacture objects of any complex shape, so it is often used in mold manufacturing, construction, engineering industrial design and other fields. In aerospace and biomedical fields, this technology is also widely used, and parts produced using this technology have already been produced. In addition, the technology is involved in personalized customization such as jewelry and cultural creativity, as well...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/12
Inventor 张朋
Owner GUANGDONG SANWEIJIA INFORMATION TECH CO LTD
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