Grid division method and device based on grid convergence factor

A convergence factor and grid division technology, applied in image data processing, 3D modeling, instrumentation, etc., can solve problems such as large amount of analysis, reduced calculation accuracy, increased grid cell division time and solution time, etc.

Active Publication Date: 2020-04-24
北京安怀信科技股份有限公司
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Problems solved by technology

However, if the number of grid units is increased blindly, it will greatly increase the grid unit division time and solution time, and sometimes the calculation accuracy will be reduced due to the cumulative error of calculation.
[0004] Therefore, in the prior art, how to divide the grid cells to ensure high accuracy of the analysis results without causing the analysis volume to be too large has always troubled finite element analysts

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  • Grid division method and device based on grid convergence factor
  • Grid division method and device based on grid convergence factor
  • Grid division method and device based on grid convergence factor

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Embodiment Construction

[0068] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0069] The invention provides a grid division method based on the grid convergence factor, which can quickly and accurately determine the optimal division size of the grid unit by taking the grid convergence factor as the judgment standard, and on the premise of meeting the precision requirements of the finite element analysis, The complexity of finite element analysis is minimized, thereby overcoming the current situation of heavy workload, low efficiency, repetitive work and difficulty in reusing existing finite element analysis. The invention has the advantages of les...

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Abstract

The invention provides a grid division method and device based on a grid convergence factor. The method comprises the following steps: creating a three-dimensional model of an analyzed object; defining simulation analysis parameters and grid setting basic parameters of the analyzed object; enabling the simulation process template to perform simulation operation according to the grid setting basicparameters and the simulation analysis parameters to obtain a grid convergence factor simulation value; judging whether the grid convergence factor simulation value is smaller than a grid convergencefactor threshold value or not, if not, reducing the value of the grid basic size by r times, and then returning back; and if so, curing the finally determined value of the basic size of the grid meeting the requirement in the simulation process template. Compared with the prior art, the method has the advantages that (1) the optimal grid size is obtained based on the grid convergence factor, and the analysis precision is guaranteed while the solving efficiency is guaranteed; (2) a simulation process template is formulated, and the grid division efficiency and reusability are improved.

Description

technical field [0001] The invention belongs to the technical field of grid division, and in particular relates to a grid division method and device based on a grid convergence factor. Background technique [0002] With the continuous development of computer science and technology, finite element simulation analysis technology is continuously applied to the design of complex systems, and has become an important way to study complex systems. The basic idea of ​​finite element simulation analysis technology is to discretize a continuum into a finite number of grid units, conduct unit analysis on the grid units connected by nodes, and then combine these grid units to represent the original continuum structure. From a mathematical point of view, finite element simulation analysis technology is a numerical analysis method that converts a partial differential equation into an algebraic equation system and uses a computer to solve it. [0003] For the numerical analysis method of ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06T17/00
CPCG06T17/00
Inventor 杨军永张晓亮
Owner 北京安怀信科技股份有限公司
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