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Wind power tower oil seal platform welding residual stress prediction and welding process optimization method

A wind power tower, residual stress technology, applied in design optimization/simulation, special data processing applications, image data processing, etc., can solve problems such as economic loss, cracking, damage, cracking or deformation, and achieve the effect of improving service life

Pending Publication Date: 2020-12-29
HOHAI UNIV CHANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The manufacture, installation and operation of wind power towers may be damaged, cracked or deformed due to factors such as wind loads, gravity loads, and long-term harsh working environments, which will eventually lead to instability or cracking of wind power towers, resulting in huge economic losses

Method used

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  • Wind power tower oil seal platform welding residual stress prediction and welding process optimization method
  • Wind power tower oil seal platform welding residual stress prediction and welding process optimization method
  • Wind power tower oil seal platform welding residual stress prediction and welding process optimization method

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Experimental program
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Effect test

Embodiment 1

[0043] This embodiment introduces a method for predicting welding residual stress of a wind power tower oil seal platform, including:

[0044] Obtain the structural parameters of the wind power tower, as well as welding material parameters, welding methods and heat source parameters;

[0045] Establish a three-dimensional model of the wind power tower including welds according to the structural parameters of the wind power tower;

[0046] Determine the heat source model according to the welding method;

[0047] Carry out finite element mesh division for the three-dimensional model of the wind power tower;

[0048] Based on the three-dimensional model of the wind power tower after finite element mesh division, heat source model, heat source parameters and welding material parameters, the welding simulation is carried out, and the temperature field and stress field in the welding process are analyzed by finite element, and the wind power tower is welded. The final residual str...

Embodiment 2

[0057] This embodiment introduces a method for optimizing the welding process of the wind power tower oil seal platform. figure 1 ,include:

[0058] Obtain the structural parameters of the wind power tower, and pre-determine the welding material parameters, welding methods and heat source parameters;

[0059] According to the structural parameters of the wind power tower, use SolidWorks software to establish a three-dimensional model of the wind power tower;

[0060] Determine the heat source model according to the predetermined welding method;

[0061] Using Visual-Mesh software to divide the 3D model of wind power tower into finite element mesh;

[0062] Based on the three-dimensional model of the wind power tower after finite element mesh division, heat source model, heat source parameters and welding material parameters, use Visual-Weld numerical simulation software to carry out welding simulation, and conduct finite element analysis on the temperature field and stress f...

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Abstract

The invention discloses a wind power tower cylinder oil seal platform welding residual stress prediction method and a welding process optimization method. The method comprises the steps of obtaining structural parameters, welding material parameters, welding modes and heat source parameters of a wind power tower cylinder; establishing a three-dimensional model of the wind power tower drum containing the weld joint according to the structural parameters of the wind power tower drum; determining a heat source model according to the welding mode; carrying out finite element mesh generation on thethree-dimensional model of the wind power tower drum; performing welding simulation based on the wind power tower three-dimensional model, the heat source model, the heat source parameters and the welding material parameters obtained after finite element mesh division, performing finite element analysis on a temperature field and a stress field in the welding process, obtaining a residual stressprediction result of the wind power tower after welding, providing a reference basis for optimization of welding process parameters, and therefore, the welding process can be adjusted and optimized, an excellent welding seam is obtained, and the service life of the wind power tower is prolonged.

Description

technical field [0001] The invention relates to the technical field of welding of a wind power tower oil seal platform, in particular to a welding residual stress prediction method and a welding process optimization method for a wind power tower oil seal platform. Background technique [0002] Wind power has been widely used in China in recent years due to its advantages of cleanness, environmental protection, renewable, inexhaustible, short infrastructure construction period, and low operation and maintenance costs. The wind tower is one of the key components of wind power equipment. The safety performance of wind power tower directly affects the efficiency, service life and performance of wind power equipment. The manufacture, installation and operation of wind power towers may be damaged, cracked or deformed due to factors such as wind loads, gravity loads, and long-term harsh working environments, which will eventually lead to instability or cracking of wind power tower...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06T17/20G06F111/10
CPCG06F30/23G06T17/20G06F2111/10
Inventor 严春妍易思张浩傅强姜心怡郑福雨
Owner HOHAI UNIV CHANGZHOU
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