Additive manufacturing-based product lightweight design method

A lightweight design and additive manufacturing technology, applied in the field of additive manufacturing, can solve problems such as design limitations, inability to achieve specific structural distribution according to performance requirements, and achieve material cost savings, reasonable and efficient lightweight design and manufacturing, Guaranteed strength

Active Publication Date: 2016-08-31
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

Traditional manufacturing methods are difficult to manufacture lightweight structures with complex shapes, and cannot achieve specific str...

Method used

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  • Additive manufacturing-based product lightweight design method

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Embodiment

[0025] Such as figure 1 shown. The invention discloses a product lightweight design method based on additive manufacturing, which includes the following steps:

[0026] Step 1: Establish a parametric lightweight unit body database. The structure of the lightweight unit body includes a minimal surface unit body, a bone tissue structure unit body, and a truss structure unit body. Analyze the mechanical properties of the lightweight unit structure in the combination mode, and establish the corresponding relationship between the parametric structure and the mechanical properties;

[0027] Step 2: Simulate the real working conditions of the product, conduct finite element analysis on the original product model structure, and obtain the stress distribution diagram;

[0028] Step 3: According to the obtained finite element stress analysis results, according to the different requirements for mechanical properties in different regions of the product, adjust the type, size, characteri...

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Abstract

The invention discloses an additive manufacturing-based product lightweight design method. The method comprises the following steps: 1, establishing a parametric porous structure database, and establishing corresponding relationships between various parametric structures and mechanical property; 2, carrying out finite element analysis on an original product model structure; 3, adjusting a parametric unit structure to satisfy difference demands, for the mechanical property, of different mesh regions in the product; 4, carrying out filling replacement on the regions with excess performance in the products by using a lightweight unit structure; 5, carrying out mechanical property check on a lightweight product structure through finite element analysis. According to the method disclosed in the invention, the finite element analysis and the gradient distribution design of a parametric porous structure are combined, and different lightweight strategies are adopted in allusion to the performance demands of different parts of function parts under the premise of satisfying the mechanical property, so that the reasonable and efficient lightweight design is realized, and lightweight products can be prepared by using an additive manufacturing method.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a product lightweight design method based on additive manufacturing. Background technique [0002] With the development of additive manufacturing technology, the lightweight design of products has been greatly liberated, providing a favorable manufacturing method for the manufacture of various complex lightweight structures. [0003] Lightweight technology is a system engineering, and its ultimate goal is to realize the comprehensive optimization of factors such as performance, weight and cost. Traditional manufacturing methods are difficult to manufacture lightweight structures with complex shapes, and cannot achieve a specific structural distribution according to performance requirements. The limitations of traditional manufacturing on design make lightweight development a bottleneck. Contents of the invention [0004] The object of the present invention is to...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23G06F2111/06G06F2113/22
Inventor 杨永强肖泽锋齐明
Owner SOUTH CHINA UNIV OF TECH
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