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A tpms-based model structure optimization method and device for 3D printing

A 3D printing and model structure technology, applied in 3D modeling, design optimization/simulation, instruments, etc., can solve problems such as inability to remove hole materials, internal hole disconnection, etc., to save printing time, save printing materials, and enhance traditional The effect of 3D printing technology

Active Publication Date: 2020-07-31
SHINING 3D TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the problem with this method is that the internal holes are not connected to each other, which cannot remove the material in the holes under some 3D printing processes

Method used

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  • A tpms-based model structure optimization method and device for 3D printing
  • A tpms-based model structure optimization method and device for 3D printing
  • A tpms-based model structure optimization method and device for 3D printing

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Embodiment 1

[0054] This embodiment discloses a 3D printing-oriented model structure optimization method based on TPMS, such as figure 1 As mentioned above, firstly, for an initially given 3D model S and a given external force F, this method can generate a TPMS pipeline inside the 3D model, so that liquid can be injected smoothly and completely fill the whole pipeline. This method optimizes the distribution of the TPMS pipeline, so that the injected material can be more intelligently distributed in the area with greater stress, so that the object can withstand a given external force.

[0055] figure 1 It is a flowchart of the present invention, and its steps include:

[0056] Step 1: Perform force analysis based on the finite element method to obtain the stress distribution SF(S,F) of a given 3D model;

[0057] Step 2: Define an adaptive TPMS periodic function P(x) according to the stress distribution. TPMS is a non-uniform structure located inside the shape, and the frequency is high in...

Embodiment 2

[0098]The purpose of this embodiment is to provide a computing device.

[0099] A TPMS-based model structure optimization device for 3D printing, comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, the processor implements the following steps when executing the program, including:

[0100] performing a finite element analysis on a given model to obtain the stress distribution of said model;

[0101] Define an adaptive TPMS periodic function according to the geometry and stress distribution of a given model;

[0102] Initialize the pipeline width, generate an internal pipeline according to the TPMS periodic function and the pipeline width;

[0103] Recalculate the stress distribution of the model to determine whether the force requirements are met. If so, generate an entry point on the surface of the model as the entrance for injecting material into the pipeline; Optimization, generate internal pipes according to the op...

Embodiment 3

[0105] The purpose of this embodiment is to provide a computer-readable storage medium.

[0106] A computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the following steps are performed:

[0107] performing a finite element analysis on a given model to obtain the stress distribution of said model;

[0108] Define an adaptive TPMS periodic function according to the geometry and stress distribution of a given model;

[0109] Initialize the pipeline width, generate an internal pipeline according to the TPMS periodic function and the pipeline width;

[0110] Recalculate the stress distribution of the model to determine whether the force requirements are met. If so, generate an entry point on the surface of the model as the entrance for injecting material into the pipeline; Optimization, generate internal pipes according to the optimized TPMS periodic function and pipe width, and repeat this step until the stres...

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Abstract

The invention discloses a TPMS-based model structure optimization method and device for 3D printing. The method comprises a step of performing finite element analysis on a given model to obtain a stress distribution of the model, a step of defining an adaptive TPMS periodic function according to the geometrical shape of the given model and the stress distribution, a step of initializing a pipelinewidth, generating an internal pipeline according to the TPMS periodic function and the pipeline width, a step of recalculating the stress distribution of the model and judging whether a force requirement is satisfied or not, and generating an entry point on the surface of the model to be an inlet for injecting a material into the pipeline if so, otherwise, optimizing the TPMS periodic function and the pipe width according to a new stress distribution, generating an internal pipeline according to the optimized TPMS periodic function and the pipe width, and performing the step repeatedly untilthe stress distribution satisfies the force requirements. According to a structure optimized by using the method of the invention, only printing an outer casing and the inner pipeline of the model isneeded, and the effects of save a printing material and saving a printing time are achieved.

Description

technical field [0001] The invention relates to the field of object internal structure optimization oriented to 3D printing, in particular to a TPMS-based model structure optimization method and device. Background technique [0002] 3D printing is a new manufacturing technology that can convert a three-dimensional digital model stored in a computer into an actual object. In recent years, 3D printing technology has attracted extensive attention from industry and academia. In the 3D printing process, different internal filling structures can be designed for objects, such as regular filling and irregular filling with different shape units. The design and selection of the internal structure should consider the strength requirements of the printed object, and should consume as little printing material and printing time as possible under the premise of ensuring the strength of the model. At present, there are many different filling methods and support structures to achieve the ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06T17/20G06F119/14
CPCG06F30/23G06T17/00
Inventor 吕琳闫鑫饶聪陈宝权安德雷.沙夫丹尼尔·科恩·奥尔
Owner SHINING 3D TECH CO LTD
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