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Porous structure modeling method based on Grasshopper and UG secondary development

A technology of porous structure and modeling method, applied in 3D modeling, image data processing, special data processing applications, etc., can solve problems such as poor controllability and difficult modeling, and achieve high controllability, high efficiency, high precision effect

Active Publication Date: 2019-02-26
NANJING INST OF TECH
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Problems solved by technology

[0004] Purpose of the invention: The purpose of the invention is to provide a porous structure modeling method based on the secondary development of Grasshopper and UG, which solves the problem of current irregular porous structure design and construction. In terms of modeling, it is difficult to model and the controllability is poor. It has great convenience and maneuverability in the development of complex models, especially porous structure models.

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  • Porous structure modeling method based on Grasshopper and UG secondary development
  • Porous structure modeling method based on Grasshopper and UG secondary development
  • Porous structure modeling method based on Grasshopper and UG secondary development

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Embodiment Construction

[0029] figure 1 It is the general work flow diagram of the present invention, selects the three-dimensional frame of porous structure to choose Thiessen polygonal three-dimensional frame, carries out modeling aiming at a pull-up sample that meets the stretching condition of the tensile testing machine, and the specific steps are:

[0030] (1) Draw the three-dimensional model of the pulled sample, and import this shape into Rhinoceros;

[0031] (2) Use the visual programming algorithm in the Grasshopper plug-in to establish a three-dimensional discrete lattice that meets certain density requirements;

[0032] (3) Use the shape of the previously imported model to segment the discrete lattice, and delete the outer part of the model to achieve the purpose of conformalization;

[0033] (4) Use the above discrete lattice to generate a Thiessen polygonal three-dimensional frame, and import this frame into UG;

[0034] (5) Use the Grip program to build a columnar structure around ea...

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Abstract

The invention discloses a porous structure modeling method based on Grasshopper and UG secondary development. Through the combination of Grasshopper and UG secondary development, Rhinoceros software is used to build three-dimensional framework of complex porous structure, and UG secondary development program is used to expand the three-dimensional framework into solid model to complete the modeling of porous structure. This method solves the shortcomings of modeling difficulty and poor controllability in the design and modeling of irregular porous structures, and has great convenience and controllability in the development of complex models, especially porous structure models.

Description

technical field [0001] The invention relates to a porous structure modeling method, in particular to a porous structure modeling method based on secondary development of Grasshopper and UG. Background technique [0002] Porous structure is an interconnected network composed of solid rods or fixed plates forming the edges and walls of pores. These porous structures have special properties and important functions in physics, chemistry, mechanics, biology and so on. As a special structural and functional material, porous structure has unique advantages in filtration and separation, energy absorption, heat exchange, electromagnetic shielding, biomaterials, etc., and is widely used in aerospace, automotive, chemical, biomedical and other fields. The modeling method of porous structure is divided into regular porous structure design method and irregular porous structure design method. The design method of regular porous structure is simple but the design freedom is limited. The i...

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Application Information

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IPC IPC(8): G06F17/50G06T17/00
CPCG06T17/00G06F30/20
Inventor 茅宁王志亮高成冲梁绘昕
Owner NANJING INST OF TECH