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A Design Method of Heterogeneous Heterogeneous Cell Structure Coordinated with Principal Stress Trajectory Line

A technology of cellular structure and design method, which is applied in the field of additive manufacturing, can solve the problems of not fully considering the force flow characteristics of parts, and the structure is not efficient and reasonable.

Active Publication Date: 2020-07-07
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the field of additive manufacturing, most of the part structures currently designed are uniform and isomorphic, and the force flow characteristics of the working conditions during the use of the parts are not fully considered, and the resulting structures are not efficient and reasonable.

Method used

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  • A Design Method of Heterogeneous Heterogeneous Cell Structure Coordinated with Principal Stress Trajectory Line
  • A Design Method of Heterogeneous Heterogeneous Cell Structure Coordinated with Principal Stress Trajectory Line
  • A Design Method of Heterogeneous Heterogeneous Cell Structure Coordinated with Principal Stress Trajectory Line

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Embodiment

[0031] Such as figure 1 As shown, a non-uniform heterogeneous cellular structure design method coordinated with the principal stress trajectory line, the method includes the following steps:

[0032] (1) Obtain the principal stress trajectory of the part according to the given load and initial area of ​​the part. This method studies the two-dimensional structure, that is, studies the two-dimensional principal stress trajectory of the part. The corresponding principal stress trajectory is the two-dimensional principal stress trajectory . figure 2 (a) given load for the parts of this embodiment, figure 2 (b) is the principal stress trajectory of the part obtained in this embodiment.

[0033] (2) Determine the inhomogeneous heterogeneous cellular structure of the part coordinated with it according to the principal stress trajectory. The cellular structure studied by this method is a lattice structure. Specifically, the heterogeneous heterogeneous cellular structure is a bar s...

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Abstract

The invention relates to a heterogeneous cellular structure design method coordinated with a principal stress trajectory. The method comprises the following steps: (1) obtaining a principal stress trajectory line of a part according to a given load and an initial area of the part; (2) determining a heterogeneous cellular structure of the part coordinated with the principal stress trajectory, wherein the heterogeneous cellular structure is a rod structure. Compared with the prior art, the present invention is based on the principal stress trajectory, combines with the cell structure design criterion, and replaces the solid structure with the cell knot, realizes the lightweight of the part and improves its mechanical performance, so that the part structure is more efficient and reasonable.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a method for designing a heterogeneous heterogeneous cellular structure coordinated with principal stress trajectory lines. Background technique [0002] As the additive manufacturing (AM) technology shifts from manufacturing "prototypes" to manufacturing "parts", the focus of its appeal has shifted from "geometry" to "performance". In the field of additive manufacturing, most of the part structures currently designed are uniform and isomorphic, and the force flow characteristics of the working conditions during the use of the parts are not fully considered, and the resulting structures are not efficient and reasonable. Contents of the invention [0003] The purpose of the present invention is to provide a non-uniform heterogeneous cellular structure design method that is coordinated with the principal stress trajectory in order to overcome the above-mentioned de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F119/14
CPCG06F30/23G06F2119/06
Inventor 王玉李后起
Owner TONGJI UNIV
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