Wing structural mechanics high-fidelity order reduction simulation method, electronic equipment and storage medium

Abstract

The invention provides a wing structure mechanics high-fidelity order reduction simulation method. The method comprises the steps of finite element grid node pairing and rigid body constraint application, non-shear load loading analysis, shear load loading analysis and equivalent section attribute calculation. The invention relates to electronic equipment and a storage medium, which are used for the method. According to the method, the problem that the internal force of the structure does not have periodicity when the slender structure is under the action of the shearing force is well solved,the shearing force condition is corrected by utilizing the mechanical response of the structure unit cells under the action of the bending load, the disturbance displacement field and the surface force are restrained, the form is simple and clear, and the embeddability is good. According to the method, the equivalent section stiffness matrix of the equivalent reduced-order model can be calculatedby simulating deformation of the wing structure unit cells under different loads, so that a reduced-order model unit is provided for finite element analysis of the aircraft wing, and the analysis efficiency of the aircraft wing model is improved.

Description

technical field [0001] The invention relates to the technical field of reduced-order simulation analysis of mechanical behavior of wing structures, in particular to a high-fidelity reduced-order simulation method for wing structure mechanics, electronic equipment, and a storage medium. Background technique [0002] The wing structure of modern aircraft is often a slender structure with complex geometric topology and complex materials. In order to meet the actual needs brought about by high-precision and high-real-time simulation of the structure, many multi-scale mechanical analysis methods using reduced-order models was proposed and applied to some practical wing structures. [0003] The multi-scale method is a commonly used mechanical analysis method. Typical dimensions of aircraft wing structures are on the order of meters, while typical dimensions (such as crack lengths) in research problems (such as fatigue fracture problems) may be on the order of millimeters or even ...

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Problems solved by technology

[0009] The key to the reduced-order analysis is to impose appropriate boundary conditions on the structural unit cells. In the existing reduced-order analysis tools, periodic boundaries are generally used condition (PBC), but because the force of the structural unit cell is no longer periodic when the slender structure is subjected to shear force, which leads to the failure of the periodic boundary condition, it needs to be corrected

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