Multi-scale multiphysics coupling simulation method of metal additive manufacturing

A metal additive and multi-physics technology, applied in design optimization/simulation, image data processing, electrical digital data processing, etc., to achieve the effect of optimizing processing parameters, improving forming efficiency, and reducing trial and error test costs

Active Publication Date: 2017-11-21
湖南珞佳智能科技有限公司
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Problems solved by technology

[0006] The purpose of the present invention is to address the deficiencies of the existing metal additive manufacturing technology, and propose a method that can reveal the microstructure evolution law, the formation and development mechanism of metallurgical defects, residual stres

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  • Multi-scale multiphysics coupling simulation method of metal additive manufacturing
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  • Multi-scale multiphysics coupling simulation method of metal additive manufacturing

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] Such as figure 1 and figure 2 As shown, the embodiment of the present invention provides a multi-scale and multi-physics field coupling simulation method for metal additive manufacturing, which is used to analyze the microstructure evolution, the formation and development of metallurgical defects, and the influence of processing gas components during the metal additive manufacturing process. Mechanism, sputtering of metal powder particles, and residua...

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Abstract

The invention provides a multi-scale multiphysics coupling simulation method of metal additive manufacturing. The method comprises the following steps: S1, establishing a metal additive manufacturing technology data model; S2, carrying out first-principles calculation by calculation software on a microscale through first principles to acquire micro physical properties of additive metal material; S3, establishing an NxNxN super-cell model of the additive metal material, and carrying out molecular dynamics simulation calculation through molecular dynamics simulation software; S4, studying plasma, which is generated in a melting process of metal powder heated by an electron beam or a laser, on a mesoscale; S5, utilizing a flow-heat-solid-magnet multiphysics coupling simulation platform for simulation calculation; and S6, establishing a technology parameter feedback control model for different types and distribution situations of defects, and optimizing metal additive manufacturing technology parameters. The method forms a macro-micro-integration metal additive manufacturing product quality prediction system by means of multi-scale multiphysics coupling simulation.

Description

technical field [0001] The invention relates to the field of metal additive manufacturing, in particular to a multi-scale and multi-physical field coupling simulation method for metal additive manufacturing. Background technique [0002] Metal additive manufacturing technology is a manufacturing method that increases materials layer by layer to form three-dimensional complex structural parts. It is specifically divided into synchronous powder feeding (wire feeding) laser (electron beam, arc, etc.) cladding forming technology and laser (electron beam) There are two types of powder bed forming techniques for selective melting. Since 1995, the U.S. Defense Advanced Research Projects Agency and the Office of Naval Research have conducted a series of studies on the technology, with plans to engineer it within a few years. However, limited by key technical issues such as laser stability and control system technology level at that time, metal additive manufacturing technology has ...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06T17/00
CPCG06F30/23G06T17/00
Inventor 李辉崔福浩申胜男刘胜
Owner 湖南珞佳智能科技有限公司
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