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Improved Mesh Discretization Method Based on Cutcell Technology in Structural Analysis

A technology for structural analysis and mesh discretization, applied in instrumentation, design optimization/simulation, calculation, etc., can solve the problem that the mesh of difficult structural analysis meets the requirements, achieve rapid modeling, improve manual processing efficiency, and ensure accuracy Effect

Active Publication Date: 2021-06-08
上海索辰信息科技股份有限公司
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  • Application Information

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Problems solved by technology

[0003] With the increase of structural complexity, structural calculation scale and solution accuracy requirements, the structural discrete modeling of structural analysis volumes puts forward higher requirements than fluid analysis grids. The traditional structural analysis grid discrete methods-grid mapping division and free Adapt to the division of grids that are difficult for structural analysis to meet the requirements

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  • Improved Mesh Discretization Method Based on Cutcell Technology in Structural Analysis
  • Improved Mesh Discretization Method Based on Cutcell Technology in Structural Analysis
  • Improved Mesh Discretization Method Based on Cutcell Technology in Structural Analysis

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[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0017] Such as figure 1 As shown, this embodiment provides an improved method for grid discretization based on Cutcell technology in structural analysis, including the following steps:

[0018] S1. Use Cutcell technology to mesh the structural analysis model according to the set mesh size (see figure 2 , where the boundary mesh on the righ...

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Abstract

The invention discloses a grid discrete improvement method based on Cutcell technology in structural analysis, comprising: using Cutcell technology to divide the grid of the structural analysis model; for the internal grid in the structural analysis model, directly taking the entire internal grid as the discrete Calculation node; the external grid outside the structural analysis model is not considered; for the boundary grid, the coordinates of the center position of the boundary grid (x i ,y i ) and the center position of the boundary grid are mapped to the corresponding tangent coordinates at the boundary of the structural analysis model. The triangular mesh outside the boundary of the analysis model is used as the node of discrete calculation. Otherwise, the center of the boundary mesh is located inside the boundary of the structural analysis model, and the entire boundary mesh is taken as the node of discrete calculation.

Description

technical field [0001] The invention relates to the technical field of grid discretization in structural analysis, in particular to an improved grid discretization method based on Cutcell technology in structural analysis. Background technique [0002] Cutcell technology, that is, grid division technology of rectangular coordinate system, is a grid discretization technology commonly used in the field of fluid simulation. Through the Cutcell technology, the Cutcell grid can be quickly divided, and then the boundary layer is attached to the boundary area. This kind of approach solves the problems of excessive workload of complex structure hexahedron division and limited calculation accuracy of tetrahedron. In fluid simulations, using appropriate Cutcell technology, for complex non-rectangular geometries, Cartesian grids can achieve similar simulation results to complex non-Cartesian grids. [0003] With the increase of structural complexity, structural calculation scale and ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/28G06T17/20G06T17/30G06F113/08G06F119/14
CPCG06T17/20G06T17/30
Inventor 吴早凤陈灏谢蓉
Owner 上海索辰信息科技股份有限公司