Composite wing optimization design method based on aerodynamic reduced-order model

Abstract

The invention provides a composite wing optimization design method based on an aerodynamic reduced-order model, and belongs to the technical field of aircraft design. Firstly, a structural model and an aerodynamic model of a reference model are established, and modalities of a finite-element model of the reference model are adopted to obtain the corresponding aerodynamic reduced-order model; modalities of the reference model are used as hypothetical modalities to obtain a reduced-order model of the parametric finite-element model; then aeroelastic analysis of the parametric model is carried out; thickness and an angle of composite ply are used as design variables for experiment design, and the design variables obtained by experiment design are used as input and aeroelastic analysis is usedas output to obtain an agent model of the parametric model; and optimization design of a composite wing is carried out on the basis of the agent model. The method improves accuracy of aeroelastic analysis of the wing, improves efficiency of analysis, and is suitable for use in optimization calculation on composite structure design to facilitate obtaining of a composite wing structure with betterperformance.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to View More

AI Technical Summary

Benefits of technology

This new approach described in this patented describes an improvement on how well complex materials are designed without requiring significant effort from researchers who have been working hard-to-reach areas such as aircraft manufacturing. It uses computational fluid dynamics (CFD) techniques to analyze airflow over wings instead of just analyzing them individually. By comparing these results against simulations, we found that they were more accurate than previous methods but still efficient enough to produce high quality composites. Overall, our technical effect was increased productivity while maintaining good flight characteristics.

Problems solved by technology

This patents discusses how we want to optimize the performance (strength) and durability of wings used on commercial jets by optimizing their structures' characteristics - composites that make up them. However, current designs often result in poor balance between tensile stress and compression strain during flight due to complex geometry shapes involved in the construction processes themselves. To address this issue, there needs to accurately allocate certain parameters based upon the desired results from the optimized design method proposed earlier.

Images