Aircraft complex structure approximate modeling method and device, equipment and medium

Abstract

The invention relates to an aircraft complex structure approximate modeling method and device, equipment and a medium, and the method comprises the steps: obtaining a plurality of sample data of an aircraft structure, and clustering each sample data by a K-means clustering method; grouping the clustered samples by a proportional distribution method, and constructing a performance prediction agent model of the aircraft structure by adopting an enhanced anisotropic radial basis method based on local density according to the obtained multiple groups of clustered and grouped samples; calculating prediction errors of the agent model by adopting a fast cross validation method according to the multiple groups of clustering grouping samples, and calculating root-mean-square errors of all the prediction errors; by taking the root-mean-square error as a target function and the anisotropic zoom coefficient as a design variable, performing optimization processing on the anisotropic zoom coefficient according to the root-mean-square error to obtain a target zoom coefficient corresponding to the minimum root-mean-square error; and performing performance prediction on the aircraft structure by using the finally constructed high-precision performance prediction model. And the performance prediction efficiency is high.

Description

technical field [0001] The present application relates to the technical field of aircraft design, in particular to an approximate modeling method, device, equipment and medium for complex aircraft structures. Background technique [0002] Due to the extreme working conditions and strict performance requirements of complex aircraft, its structure needs to have superior performance in terms of strength, stiffness and bearing capacity. The performance prediction of different structures of complex aircraft is one of the core and most difficult technologies in aircraft structure design. Its main task is to evaluate the bearing capacity of different structural forms by predicting the deformation and destruction of aircraft structures under operating loads. , so as to design a structure with light weight and high strength. [0003] At present, the commonly used methods for predicting the structural performance of complex aircraft mainly include: (1) Program simulation method. For ...

AI Technical Summary

Problems solved by technology

[0004] However, in the process of realizing the present invention, the inventors found that the aforementioned traditional method for predicting the structural performance of complex aircraft still has the technical problem of low efficiency in predicting the structural performance of the aircraft.

Images