Intelligent generation method for three-dimensional model of truss structure

Abstract

The invention provides an intelligent generation method for a three-dimensional model of a truss structure. By adopting staged intelligent aided design of a lapped frame structure, three-dimensional assembly modeling of the lapped frame structure is divided into two processes of qualitative lapping relationship judgment and quantitative geometric calculation, and by using a deep learning and Zhu-Liu algorithm combined method, the key first stage, namely, the qualitative lapping relationship judgment process is solved; then by using a geometric calculation method, the second stage is finished;and finally intelligent three-dimensional modeling of the truss structure is realized. According to the method, the three-dimensional assembly model of the truss structure can be effectively and intelligently built. The used method is relatively good in performance; the time complexity of an algorithm is relatively low; a modeling result is accurate and reliable; the built three-dimensional assembly model is better kept consistent with an existing design principle; and the generated frame structure model better conforms to current reality.

Description

technical field [0001] The invention relates to the field of three-dimensional modeling, in particular to a method for intelligently generating a three-dimensional model of a truss structure. Background technique [0002] Frame structure products are widely used in aerospace and mechanical products, but the expression forms are different in the conceptual design stage and the detailed design stage. The conceptual design stage is usually represented by a topology model, which is conducive to shortening the development cycle Design prototypes for finite element analysis, topology optimization, and size optimization. In the subsequent detailed design stage, the designer needs to generate the corresponding 3D model in CAD based on the topology model and profile specification table completed in the conceptual design stage for subsequent work. This process is as image 3 shown. However, by image 3 The topological model of (a) to image 3 (b) The conversion and construction of t...

AI Technical Summary

Problems solved by technology

In addition, the frame structure usually constitutes a large number of profiles and forms a complex spatial structure

This makes the construction process of its 3D model very cumbersome and becomes the bottleneck of design work

And assembly design changes will also lead to a series of related profiles to adjust the shape of the end

This process also represents a lot of heavy work and is prone to error

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