Skin panel parameter optimization method based on stability algorithm

Abstract

The invention discloses a skin panel parameter optimization method based on a stability algorithm, and the method comprises the following steps: 1, calculating the equivalent stress and critical instability stress of a skin unit according to an initial model of a metal wing skin panel structure, and calculating the stress ratio of the skin unit; 2, when the stress ratio of the skin unit is larger than or equal to 1, setting a thickness increasing coefficient used for increasing the thickness of the skin unit; and step 3, according to the comparison between the thickness increase amount formed by the skin unit by adopting the thickness increase coefficient set in the step 2 and the minimum amount of the skin thickness processing technology, determining to perform thickness increase treatment on the skin unit by adopting the thickness increase coefficient or the minimum amount of the skin thickness processing technology. According to the embodiment of the invention, the problems that the traditional skin panel parameter optimization method highly depends on the experience of designers and the manual parameter adjustment workload is huge due to the fact that the stability is only checked without active participation in the traditional skin panel parameterization process are solved.

Description

technical field [0001] The invention relates to but not limited to the technical field of aircraft structure design and strength analysis, in particular to a method for optimizing parameters of a skin panel based on a stability algorithm. Background technique [0002] In the process of optimizing the parameters of the traditional aircraft metal wing skin panel, the optimization idea is as follows: take the thickness parameter of the skin panel as the optimization variable, and take the full stress level as the constraint condition under the limitation of the manufacturing process, and then check the stability of the panel , and finally take the minimum weight of the wall panel as the optimization goal. [0003] In the above-mentioned wall panel parameter optimization method, the wall panel stability is only used as a passive strength check function, not as an active design reference; and the existing parameterization process can only manually modify the thickness parameters ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is: the embodiment of the present invention provides a skin panel parameter optimization method based on the stability algorithm, to solve the traditional skin panel parameterization process, because the stability is only checked and does not participate in the initiative, thus The problem that the traditional skin panel parameter optimization method is highly dependent on the experience of the designer and the workload of manual parameter adjustment is huge

Images