Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Mesh generation method of modeling structural steel knifing pass rolling process

A rolling process and grid generation technology, applied in the pre-processing field of finite element engineering analysis, can solve problems such as rough two-dimensional grid division and unavailable grid division, and achieve the effect of improving stability

Inactive Publication Date: 2013-04-10
ANGANG STEEL CO LTD
View PDF2 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can effectively obtain the mesh division of the three-dimensional solid, but the two-dimensional mesh division is relatively rough, and it is not mesh division for the simulation of the rolling process
According to its technical characteristics, it is impossible to obtain a mesh division that satisfies the simulated deep hole rolling process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mesh generation method of modeling structural steel knifing pass rolling process
  • Mesh generation method of modeling structural steel knifing pass rolling process
  • Mesh generation method of modeling structural steel knifing pass rolling process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] See Figure 1 to Figure 5 , is the finite element mesh division of the rolled piece during the rough rolling and deep hole rolling process of the rail:

[0041] 1) First obtain the two-dimensional initial shape of the billet for the required simulation pass, and ensure that the curve is closed;

[0042] 2) Set the seed point on the contour boundary in the two-dimensional plane of the blank. The seed point is dense in the part with large deformation, and one seed point is set every 6mm. The seed point is sparse in the part with small deformation, and one seed point is set every 13mm. In the middle, the transition zone is used to obtain the transition of dense and dense grids, and a seed point is set about every 10mm;

[0043] 3) The grid division in the two-dimensional plane adopts the MSC.Mentat automatic grid calculation method, which generates one unit at a time, and gradually generates a global grid from the boundary of the region to the interior, and the generated ...

Embodiment 2

[0047] See Figure 6 ~ Figure 10 , the finite element mesh division of the rolled piece in the process of rough rolling and deep hole cutting of bulbous flat steel:

[0048] 1) First obtain the two-dimensional initial shape of the billet for the required simulation pass, and ensure that the curve is closed;

[0049] 2) Set the seed point on the contour boundary in the two-dimensional plane of the blank. The seed point is dense in the part with large deformation, and one seed point is set every 4mm. The seed point is sparse in the part with small deformation, and one seed point is set every 10mm. In the middle of the transition zone to obtain the transition of dense grid, set a seed point about every 7mm;

[0050] 3) The grid division in the two-dimensional plane adopts the MSC.Mentat automatic grid calculation method, which generates one unit at a time, and gradually generates a global grid from the boundary of the region to the inside, and the generated grid is generated based...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the pretreatment field of the finite element engineering analysis, in particular to a mesh generation method of a modeling structural steel knifing pass rolling process. The mesh generation method of the modeling structural steel knifing pass rolling process is characterized by including the steps that (101) seed points are arranged on the outline boundary in the two dimensional plane of the rolled piece with an original shape, (102) mesh generation is proceed in the two dimensional plane to form quadrilateral elements, and (103) the meshes in the two dimensional plane are expanded to form three-dimensional finite element meshes which is the rolled piece model eight nodes hexahedron mesh generation. Compared with the prior art, the mesh generation method of the modeling structural steel knifing pass rolling process has the advantages that three-dimensional finite element meshes produced by the mesh generation method can meet the requirement of structural steel knifing pass rolling process modeling, and finally achieves the aim of modeling knifing pass rolling process accurately and successfully; the rolled piece meshes produced by the generation method can meet the requirement of three-dimensional elastic-plastic heat-machine coupling model analog, ensures enough computational accuracy, and improves stability of calculating.

Description

technical field [0001] The invention relates to the preprocessing field of finite element engineering analysis, in particular to a grid generation method for simulating the process of deep hole cutting and rolling of section steel. Background technique [0002] Due to the particularity of the section steel structure, it is necessary to use deep-cut holes to deform the steel billet unevenly during the rolling production process. The process of billet deformation and stress is complex. In order to accurately understand and master the process, and to accurately control the size and specifications of the rolled piece, it is necessary to use the finite element simulation method. For the simulation of the rail rolling process, due to its complex deformation process, it is necessary to establish a three-dimensional finite element model for simulation, and the rolled piece is divided by a reference unit such as an eight-node hexahedron. Finite element mesh generation is a prerequis...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F17/50
Inventor 原思宇王军生李广龙高冰赵坦李文斌王旭王奎越费静宋宝宇吴萌
Owner ANGANG STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com