Large and medium-sized part lightweight design method based on generative optimization and guide reconstruction

Abstract

The invention provides a large and medium-sized part lightweight design method based on generative optimization and guide reconstruction. The method comprises the following steps of: establishing an original model, selecting a manufacturing material, performing stress and deformation analysis on the original model, judging whether the material selection is suitable or not, performing generative topological optimization on the original model, and screening a generative optimization design scheme according to an evaluation model; taking a traditional processing technology as a guide, performing reverse reconstruction on the generative optimal scheme model, performing stress and deformation analysis again, and checking strength and rigidity; and performing secondary or multi-time reconstruction on the reconstruction model which does not meet the design requirements until a result meeting the design requirements is obtained. According to the method, the limitation that topological optimization structure forming depends on additive manufacturing is broken through, the problem that it is difficult to widely apply the topological optimization technology under the influence of the limitation that the additive manufacturing technology is limited in forming size, high in machining failure risk, high in manufacturing cost and the like is solved, and the weight, the machining difficulty and the manufacturing cost of large and medium-sized parts are effectively reduced.

Description

technical field [0001] The invention belongs to the technical fields of model design and metal processing and manufacturing, and in particular relates to a lightweight design method for large and medium-sized parts based on generative optimization and guided reconstruction. Background technique [0002] In engineering applications, structural lightweight design means less material cost and lower energy consumption, and has a wide range of applications in many fields such as aerospace and automobile manufacturing. [0003] Generative topology optimization design is a structural lightweight design method that integrates generative design and topology optimization design. The so-called generative design is a design method that can explore all possible solution combinations according to the designer's intention, thereby quickly generating alternatives. Topology optimization technology takes material distribution as the optimization object, and can find the best material distrib...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention constructs the target stress value calculation model and the optimal design scheme evaluation model, adopts generative topology optimization technology, realizes the lightweight design of the target structure to the greatest extent, and obtains the best force transmission performance. While optimizing the model, guided by the traditional molding process, reversely reconstruct the model of the optimal solution, and analyze the stress and deformation of the reconstructed model again, and check the strength and stiffness; according to the information fed back from the check result , perform secondary or multiple reconstructions on the reconstruction model that does not mee

Images