A Fast Finite Element Modeling and Post-processing Method for Solar Sail Structure

Abstract

Disclosed is a solar sail structure finite element modeling and post-processing method. The solar sail structure finite element modeling and post-processing method includes: 1), setting a solar sail configuration mode and a connecting format of a support arm and a sail surface and reserving an area for the support arm; 2), establishing a solar-sail geometric model with the preserved area; 3), setting a support arm model and generating a support-arm geometric model in the reserved area; 4), establishing finite element models of the solar sail surface and the support arm; 5), subjecting the solar sail surface and the support arm to finite element mode assembly according to the generated infinite element models of the solar sail surface and the support arm; 6), setting statics boundary conditions and loading conditions on the finite element models; 7), calculating buckling load of the support arm, simulating reverse acceleration speed released by the inertia, and exerting the reverse acceleration speed on the infinite element models; 8), analyzing statics of a solar sail to acquire maximum deformation and axial pressure of the support arm; 9), calculating buckling safety factors and structuring feasibility of a solar sail structural scheme according to the buckling safety factors.

Description

technical field [0001] The invention relates to a fast modeling and post-processing method of a structure finite element, and is especially suitable for analyzing the mechanical characteristics of a large super-flexible solar sail structure connected by a support arm and a film. Background technique [0002] A solar sail is a spacecraft that uses the sun's reflected light pressure on a large area of ​​film to provide flight power. As long as there is sunlight, it can continue to accelerate, and eventually achieve a much greater speed than ordinary spacecraft. It is not limited by fuel and can run in space for a longer time, so solar sail spacecraft The generation of the space is of great significance to the future space exploration. [0003] The light pressure points to the normal direction of the solar sail, so by controlling the angle between the solar sail and the sun's rays, the magnitude of the light pressure can be changed, and the light pressure can be turned into a ...

AI Technical Summary

Problems solved by technology

[0006] When analyzing the mechanical characteristics of solar sails, finite element modeling is a thorny issue in the mechanical analysis process, which is time-consuming and labor-intensive. Usually, small changes in the structural form or changes in configuration dimensions will lead to repetitive workload of finite element analysis

At the same time, ordinary post-processing analysis cannot reflect the real mechanical properties of solar sails, and the mechanical properties of large ultra-flexible sails cannot be reflected at all through simple result data.

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