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A lightweight modeling system for shell-like parts oriented to 3D printing

A 3D printing and lightweight technology, applied in 3D modeling, image data processing, special data processing applications, etc., can solve the problem of less research on shell models, and achieve the effect of shortening the design optimization cycle

Inactive Publication Date: 2017-10-17
DALIAN UNIV OF TECH
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Problems solved by technology

However, less research has been done on the optimization of shell-like models

Method used

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  • A lightweight modeling system for shell-like parts oriented to 3D printing
  • A lightweight modeling system for shell-like parts oriented to 3D printing
  • A lightweight modeling system for shell-like parts oriented to 3D printing

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Embodiment Construction

[0051] The implementation of the present invention can be divided into several main steps of feature extraction, thermal diffusion simulation and thickness optimization, 3D printing and engineering force verification:

[0052] (1) Feature extraction

[0053] Given a shell model M with thickness, S is its corresponding inner surface. First of all, it is necessary to perform feature analysis on the inner surface S of the model, which includes two parts: automatic extraction of geometric information features and interactive extraction of other features. The former is mainly used to analyze and extract the geometric features of the model itself, such as ridge features, etc.; the latter is mainly used to supplement other features of the model, such as non-geometric features such as the main supporting parts. Here, the features play a similar role as a structural skeleton, providing constraint information for the next step of optimization.

[0054] grid point v i The normal vote ...

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Abstract

The invention provides a 3D printing-oriented lightweight modeling system for shell-like components, which belongs to the fields of computer-aided design and industrial design and manufacturing. The lightweight modeling system for shell-like parts oriented to 3D printing simulates the force distribution of the model through thermal diffusion under the given feature constraints and stress conditions, and corresponds the simulated value to the thickness of the model to obtain a preliminary optimization Model. Then, the physical experimental model was obtained by 3D printing, and the engineering force verification of the experimental model was carried out. Furthermore, according to the engineering verification, the degree of thermal diffusion is adjusted through the diffusion parameters, so that the thickness of the optimized model is closer to the actual force requirements. Finally, through the above-mentioned cyclic iteration process, a weight optimization model that meets the force requirements is obtained.

Description

technical field [0001] The invention is applicable to the light weight of a part model with a shell structure, belongs to the fields of computer aided design and industrial design and manufacture, and is especially suitable for the field of lightweight design and manufacture of automobiles. Background technique [0002] With the vigorous development of the manufacturing industry, energy saving and environmental protection have become a key research topic in the development of this industry, and lightweight design is its key research direction. On the other hand, 3D printing is known as an important symbol of the third industrial revolution, and it is a research hotspot at home and abroad. Its advantages in personalization and diversification have brought great benefits to many fields (especially manufacturing) New vitality plays a unique role in aerospace, biomedicine, automobile manufacturing and other fields, bringing new development opportunities to related industries. R...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06T17/00
Inventor 王胜法李宝军吕掌权张龙飞罗钟铉
Owner DALIAN UNIV OF TECH
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