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Mesh Generation Method and System for Geometric Structure Transition Area

A geometry and grid generation technology, applied in design optimization/simulation, special data processing applications, etc., can solve problems such as difficulties in transitional grid structures, alleviate the difficulties of generating transitional grid structures, clarify the logical relationship of coordinate transfer, Avoid the effect of node coordinate changes

Active Publication Date: 2020-11-10
国家超级计算天津中心
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the purpose of the present invention is to provide a grid generation method and system for the transitional region of the geometric structure, so as to alleviate the technical problem existing in the prior art that it is difficult to generate a transitional grid structure for complex spatial regular geometry

Method used

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  • Mesh Generation Method and System for Geometric Structure Transition Area
  • Mesh Generation Method and System for Geometric Structure Transition Area
  • Mesh Generation Method and System for Geometric Structure Transition Area

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Embodiment 1

[0046] see figure 1 , a flow chart of a method for generating a mesh in a transition region of a geometric structure provided by an embodiment of the present invention. The mesh generation method for the transition area of ​​the geometric structure provided by the embodiment of the present invention is aimed at the geometry with certain rules, and the cutting principle will be determined according to the rules of the geometry. The common circular arc and plate intersection structure in mechanical welding is used as an example to demonstrate the specific application steps of this method in mesh division.

[0047] Firstly, the cutting principle setting step S100: set the cutting principle of the geometric structure according to the geometric characteristics of the geometric structure set by the user. Specifically, in the method for generating a mesh in a transition area of ​​a geometric structure provided by an embodiment of the present invention, the geometric feature is a fea...

Embodiment 2

[0062] see Figure 6 , a schematic structural diagram of a mesh generation system for a geometric structure transition region provided by an embodiment of the present invention. The grid generation system in the geometric structure transition area provided by the embodiment of the present invention includes: a cutting principle setting unit 100, a cutting control parameter setting unit 200, a geometric cutting unit 300, a grid seed configuration unit 400, and a grid generating unit 500 . Among them, the cutting principle setting unit, the cutting control parameter setting unit, the geometric cutting unit, the grid seed configuration unit and the grid generating unit are connected in sequence.

[0063] The cutting principle setting unit sets the cutting principle of the geometric structure according to the geometric characteristics of the geometric structure. Specifically, in the grid generation system of the geometric structure transition area provided by the embodiment of the...

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Abstract

The invention provides a grid generation method and system for a geometric structure transition region, and relates to the technical field of finite element numerical analysis. Firstly, a cutting principle setting unit sets a cutting principle. Secondly, a cutting control parameter setting unit generates a cutting control parameter, wherein a local coordinate system generation unit establishes a local coordinate system; a cutting mode configuration unit sets a cutting mode; a cutting coordinate generation unit generates cutting coordinates; and a cutting boundary parameter setting unit sets a cutting boundary parameter according to a geometric characteristic. Thirdly, a geometric cutting unit cuts a geometric structure. Finally, a grid seed configuration unit configures a grid seed; and a grid generation unit generates a grid of the geometric structure. According to the technical scheme, the technical problem of difficulty in generating a grid structure of a geometric body with a complex spatial law in the prior art is relieved; the grid generation is combined with the geometric characteristic of the geometric body; and the grid generation method and system is suitable for the grid structure of the geometric body with the complex spatial law.

Description

technical field [0001] The invention relates to the technical field of finite element numerical analysis, in particular to a grid generation method and system for a geometric structure transition area. Background technique [0002] As a very effective numerical analysis method, the finite element method is widely used in solving continuity problems such as structural mechanics, heat conduction, electromagnetic field, and fluid mechanics. When the finite element method is used, the physical model needs to be discretized into unit grids. Relatively accurate analysis requires denser grids, but too many grids will cause a great consumption of computing resources. This requires the use of corresponding grid densities according to the different areas of interest. The area where the grid thickness and fineness meet is called the transition grid area, and finally the transition unit becomes an important content of grid division. At present, the generation methods based on grid node...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23
CPCG06F30/23
Inventor 彭修乾孟祥飞段莉莉李健增冯景华菅晓东刘光明
Owner 国家超级计算天津中心
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