Fast simulation method of vibration response of aerospace aircraft wing

Abstract

The invention discloses a fast simulation algorithm of vibration response of an aerospace aircraft wing, and belongs to the technical field of aerospace, and relates to a vibration simulation technology of an aeroelastic structure. Modelling is conducted based on the fluid solid coupling problem encountered by the wing of an aircraft when the aircraft flies in a flow field in a high speed, and the method of using a new differential equation for solving the problem is proposed. The dynamic features such as the vibration and the limit cycle of an aerospace aircraft airfoil in a high speed flow field can be quantitatively investigated. The method establishes a precise and reliable mathematical model for the design of aerospace aircraft wings, and a novel fast effective time discrete method is applied in the investigation of the dynamic model of the non-linear airfoil, therefore all the dynamic features of the wings can be investigated. The method is applicable to the vibration simulation of the airfoils with strong non-linearity, and is high in efficiency and precision.

Description

technical field [0001] The invention belongs to the field of aerospace technology, and relates to a simulation technology of aeroelastic vibration of a wing airfoil, in particular to a fast simulation method for the vibration response of an aerospace vehicle wing. Background technique [0002] Aerospace vehicle is a new generation of reusable space-to-ground shuttle system, which is of great significance to reduce the cost of space transportation. One of its characteristics is that it can freely take off, land and fly between outer space and the atmosphere. To develop aerospace vehicles, it is necessary to solve the following key technologies: namely, aerospace vehicle structure technology with ultra-light weight, high strength, heat resistance and impact resistance, hypersonic technology, high maneuverability flight technology, long-distance aerospace flight technology, high stealth technology, precision strike and reliability technology. Among these key technologies, the...

AI Technical Summary

Problems solved by technology

Because of the existence of the integral term, whether it is for the direct numerical solution algorithm or the perturbation method or the weighted residual method, the solution requires a lot of symbolic processing in advance, which consumes a lot of computing resources

Existing methods such as harmonic balance method and perturbation method are often unable to quickly and comprehensively analyze the response of the system

This largely affects the parametric design of the wing structure

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