Modeling method for structural finite element model

Abstract

The invention relates to the field of computer simulation technologies and especially relates to a modeling method for a structural finite element model. The method comprises the steps that data is normalized; an organization manner of geometric models input into universal pre-processing is arranged, and computer assistant design CAD parts are named according to the rule that each part name is composed of three part including a part name, a material name and attribute information; model part attributes are updated; and according to the name manner of the model part names at the first step as well as the information contained in the part names, the information in the part names can be obtained, and corresponding materials and attributes can be established. According to the invention, a finite element simulation method is used, so analysis and prediction can be conducted in advance before actual processing of the parts; the parts does not need separate manual processing; modeling processes are optimized; simulation efficiency is increased; production duration of the parts is reduced; and production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of computer simulation, in particular to a modeling method for a structural finite element model. Background technique [0002] As an effective analysis method in the field of computer simulation, the finite element method has been widely used in the aerospace field. At the same time, with the continuous enhancement of computer performance, the modeling of aeronautical structures tends to be refined, and it is necessary to reflect the structure in the model. The detailed features have led to the continuous increase in the scale of the finite element model, and the number of degrees of freedom has exceeded 100 million units. [0003] The iteration time of modern R&D work is short and the update is fast. The simulation analysis work needs to analyze and evaluate the structure in a short time. Without regular modeling work, it will lead to a long time for simulation calculation and debugging, which will affect ...

AI Technical Summary

Problems solved by technology

[0005] However, there are still some problems in the current modeling process. The coverage of aeronautical structural parts is not complete. Some special parts (such as butt joints and hanging point joints) are not suitable for rapid modeling methods. Manual processing of single parts is still required, which affects the overall Analysis speed, poor accuracy, low precision, consume a lot of time and energy

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