Three-way intersecting line welding temperature field numerical simulation and prediction method and system, and medium

A numerical simulation, welding temperature technology, applied in CAD numerical modeling, special data processing applications, computer-aided design, etc., can solve the problems of high quality difficulty, difficult welding seam positioning, and difficulty in accurately obtaining changes.

Pending Publication Date: 2021-11-19
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

The intersecting line weld belongs to the complex space curve welding, the process is complex, the welding seam positioning is difficult, and it is difficult to ensure the quality
In addition, the welding process has the characteristics of high temperature, instantaneous, dynamic, etc. It is difficult to accurately obtain the changes of parameters such as temperature on the welding components during the welding process by using traditional testing methods

Method used

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  • Three-way intersecting line welding temperature field numerical simulation and prediction method and system, and medium
  • Three-way intersecting line welding temperature field numerical simulation and prediction method and system, and medium
  • Three-way intersecting line welding temperature field numerical simulation and prediction method and system, and medium

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Embodiment Construction

[0057] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. For the step numbers in the following embodiments, it is only set for the convenience of illustration and description, and the order between the steps is not limited in any way. The execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art sexual adjustment.

[0058]In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based ...

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Abstract

The invention discloses a three-way intersecting line welding temperature field numerical simulation prediction method and system, and a medium. The method comprises the following steps: building a three-dimensional model, and carrying out grid division of the three-dimensional model, wherein the three-dimensional model comprises a three-way pipe fitting and a welding seam; establishing a heat source model for welding, and obtaining a moving track curve of the heat source model according to grid node coordinates of a welding bead in the three-dimensional model; performing simulation analysis in combination with the heat source model, the track curve, and the three-dimensional model, and obtaining temperature parameters on welding components in a welding process. According to the method and the system, simulation calculation of a temperature field in a three-way intersecting line welding process can be achieved; in addition, a welding track curve is fitted by capturing welding bead grid node coordinates, and the method can be suitable for any irregular space welding curve, so that the problem that, in the prior art, the welding track is difficult to accurately describe through a traditional geometric parameter equation, is solved; the invention can be widely applied to the field of welding numerical simulation.

Description

technical field [0001] The invention relates to the field of welding numerical simulation, in particular to a method, system and medium for numerical simulation prediction of a three-way intersecting line welding temperature field. Background technique [0002] In the field of petrochemical industry, pressure pipes are an important medium for heat and mass transfer. They are widely used, and most of the transported materials are high-temperature, flammable and explosive media. Once damaged, it will cause serious casualties and huge economic losses. During the laying process of pressure pipelines, tee fittings are often required for diversion or diversion, and there are a large number of welding problems of pipe intersecting line welds. The intersecting line weld belongs to the complex space curve welding, the process is complicated, the welding seam positioning is difficult, and the quality assurance is difficult. In addition, the welding process has the characteristics of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F111/10G06F119/08
CPCG06F30/23G06F2119/08G06F2111/10
Inventor 闫莉丹马小明詹迪席泽瑞
Owner SOUTH CHINA UNIV OF TECH
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