A method for quickly generating load distribution mesh data

By establishing a two-dimensional projection surface of the component in the Patran software and calculating the coordinates of the center point of the mesh, the problem of generating load distribution mesh data in the prior art is solved, realizing fast and accurate mesh data generation and three-dimensional center point acquisition, reducing workload and measurement error.

CN115952663BActive Publication Date: 2026-07-24JIANGXI HONGDU AVIATION IND GRP
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Patent Information

Application Number
CN202211680149.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-26
Publication Date
2026-07-24
Estimated Expiration
2042-12-26

AI Technical Summary

Technical Problem

In existing technologies, load distribution grid data generation relies on manual acquisition and cannot directly combine the aerodynamic features of the three-dimensional digital model to divide the two-dimensional load distribution grid, resulting in a large workload, high measurement error, and limited applicability. In particular, the three-dimensional coordinates of the face center point cannot be directly obtained for V-tail type components.

Method used

Using the geometry and mesh modules in Patran software, the mesh is generated by creating a two-dimensional projection surface of the component, determining the mesh type and exporting the node coordinates, calculating the coordinates and area of ​​the mesh face center using formulas, generating a mesh node data matrix, and outputting a CAD format file for personalized identification, and finally exporting the three-dimensional coordinates.

Benefits of technology

It enables the rapid and accurate generation of load distribution grid data, reducing workload, lowering measurement errors, expanding the scope of application, and directly combining the aerodynamic features of the three-dimensional digital model for grid generation, supporting the acquisition of the three-dimensional coordinates of the face center point.

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Abstract

The application discloses a method for rapidly generating load distribution grid data, which comprises the following steps: firstly, importing an original catia three-dimensional model of an airplane as input into patran software; secondly, establishing a two-dimensional projection surface of a component in a geometry module or a grid module of the patran software, completing component load distribution grid division, and dividing the component grid type into a matrix type grid and a non-matrix type grid; thirdly, exporting component grid node coordinates in row order or column order to obtain grid node coordinate data; fourthly, arranging the grid node coordinate data into a matrix according to the position of the grid node coordinate data in the grid to generate a grid node coordinate data matrix; fifthly, calculating grid node face center point coordinates and area from the grid node data matrix; and finally, synchronously outputting a grid drawing CAD format file according to the grid node coordinate. The application has the advantages of small workload, low measurement error, high flexibility and wide application range.
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