Grid division method and device based on grid convergence factor

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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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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