Finite element grid geometric structure contour recognition method and device and medium

Abstract

The embodiment of the invention discloses a finite element grid geometric structure contour recognition method and device and a medium. The method comprises the following steps: acquiring three-dimensional geometrical characteristics of a plate shell structure part from CAE software; projecting the three-dimensional geometric features to a maximum plane in the three-dimensional geometric features to obtain two-dimensional geometric features; determining a two-dimensional convex hull of the two-dimensional geometric feature as a contour point loop of the two-dimensional geometric feature; sequentially determining and inserting missing contour points between each contour point and the next contour point in the contour point loop along the direction of the contour point loop to obtain a final contour point loop; wherein the direction of the contour point loop comprises a clockwise direction and an anticlockwise direction. According to the embodiment, the contour of the complex geometric feature is automatically identified.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of finite element simulation, and in particular, to a method, equipment and medium for identifying the outline and contour of a finite element mesh geometric structure. Background technique [0002] CAE performance simulation is an indispensable link in the development process of automobile body structure performance, and the finite element meshing of automobile structure occupies 60%-80% of the time in the entire CAE simulation process. [0003] In the traditional finite element meshing process of automobile structure, the shape and contour recognition of geometric structure is mainly completed by manpower, which not only increases the recognition time and cost, but also the recognition accuracy of complex geometric feature contour is unsatisfactory. SUMMARY OF THE INVENTION [0004] The embodiments of the present invention provide a method, equipment and medium for identifying t...

AI Technical Summary

Problems solved by technology

[0003] In the process of finite element meshing of traditional automobile structures, the contour recognition of geometric structures is mainly completed by manpower, which not only increases the recognition time and cost, but also has poor recognition accuracy for complex geometric feature contours

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