3D printing pipeline compensation design method based on residual stress correction

A residual stress, 3D printing technology, used in 3D modeling, design optimization/simulation, calculation, etc.

Active Publication Date: 2021-09-10
YANSHAN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] In view of the above problems, the object of the present invention is to provide a 3D printing pipeline compensation design method based on residual stress correction, which can solve the defect prediction and compensation design problems of 3D printing pipelines and overhanging structural parts, and can effectively improve the forming quality of 3D printing pipelines

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  • 3D printing pipeline compensation design method based on residual stress correction
  • 3D printing pipeline compensation design method based on residual stress correction
  • 3D printing pipeline compensation design method based on residual stress correction

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Embodiment Construction

[0037] In order to more clearly illustrate the technical solutions in the embodiments or the prior art embodiment of the present invention, the following embodiments or drawings described in the prior art needed to be used to make a simple embodiment will be introduced hereinafter, the following description of the drawings Some embodiments of the present invention are embodiments, those of ordinary skill in the art is concerned, without creative efforts, can derive from these drawings other drawings.

[0038] The present invention is one kind of the proposed 3D printing pipe compensator design method based on the correction residual stress, comprises the steps of:

[0039] Step S1, the determined diameter, wall thickness, length of the pipe and other design parameters of the pipe to be printed, rendering three-dimensional graphics software for the .STL file and saved SLM printers recognizable;

[0040] Step S2, the present example is a pipe radius of 5mm study, the upper half of t...

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Abstract

The invention relates to a 3D printing pipeline compensation design method based on residual stress correction. The method comprises the steps: giving design parameters of a pipeline, discretizing the pipeline into a 3D printing suspension structure model, simulating a 3D printing process under different technological parameters through a finite element numerical analysis method, carrying out the residual stress analysis according to different suspension angles to obtain residual stress data causing deformation in different directions, and then establishing a mathematical model of deformation. Due to the fact that buckling deformation inevitably exists in the 3D printing process, according to the material ml property of the 3D printing structure, deformation predicted to be generated by all nodes in the suspension structure in all directions is calculated, and then the total deformation caused by buckling is obtained through the accumulative effect of deformation. Therefore, the total deformation generated by buckling deformation is used for bringing a data basis for shape compensation work, and finally the shape compensation structure design work of the 3D printing pipeline based on the selective laser melting technology is completed.

Description

Technical field [0001] The present invention relates to 3D printing architecture design compensation, and in particular, to a 3D printing pipe compensator design method based on the modified residual stress. Background technique [0002] Additive manufacturing technology (commonly known as 3D printing technology) is a kind of manufacturing technology more than 50 years of development, the current domestic and foreign are seeking to develop the technology, national NSFC, the American Association that NSF is an additive manufacturing technology machining the major innovation and change, is an important technology for the manufacture of power strategy. With conventional machining methods, such as forging and casting and plastic molding method except that the additive manufacturing technique that a layout freedom, high precision, easy to operate and so forming apparatus. Selective laser melting technique (SLM) is a high-energy laser-based rapid melting of the metallic powder is rapid...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06T17/00G06F119/14
CPCG06F30/20G06T17/00G06F2119/14Y02P10/25
Inventor 汪飞雪李子聪徐晨光姚静刘鹏举张天翊
Owner YANSHAN UNIV
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