Modular Dynamic Modeling for On-Orbit Assembly of Large-Scale Space Structures

IF 1.1 4区工程技术 Q3 ENGINEERING, AEROSPACE

International Journal of Aerospace Engineering Pub Date : 2023-10-07 DOI:10.1155/2023/6659124

Weiya Zhou, Shunan Wu, Jinzhao Yang

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引用次数: 0

Abstract

The large-scale space structure during on-orbit assembly is a time-varying system. The dynamic modeling problem of such incrementally increasing space structure is investigated, and a modular dynamic modeling approach is proposed in this paper. The dynamic model of each substructure is first established, and then, a database is designed to store substructure models, which is used for subsequent dynamic modeling in the assembly process. The fixed connection relationship between adjacent substructures is described by constraint conditions, which lead to the coefficient matrices of adjacent substructures being decoupled. The substructures are assembled in a given sequence, and then, the dynamic modeling, to describe the large-scale space structure on-orbit assembly, is gradually completed via using the proposed modeling approach. The numerical simulation is finally presented. The results demonstrate that the extra calculation resulting from the coefficient matrices coupling of adjacent substructures is avoided. Moreover, the proposed dynamic model can accurately describe the dynamic characteristics of the large-scale space structure during on-orbit assembly.

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大型空间结构在轨装配模块化动力学建模

在轨装配过程中的大尺度空间结构是一个时变系统。研究了这种增量增长空间结构的动态建模问题，提出了一种模块化的动态建模方法。首先建立各个子结构的动态模型，然后设计一个数据库来存储子结构模型，用于后续装配过程中的动态建模。通过约束条件来描述相邻子结构之间的固定连接关系，从而实现相邻子结构系数矩阵的解耦。将子结构按给定的顺序组装，然后利用所提出的建模方法逐步完成描述空间结构在轨组装的动态建模。最后进行了数值模拟。结果表明，避免了相邻子结构的系数矩阵耦合带来的额外计算。此外，所建立的动力学模型能够准确地描述大尺度空间结构在轨装配过程中的动力学特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Aerospace Engineering ENGINEERING, AEROSPACE-

CiteScore

2.70

自引率

7.10%

发文量

195

审稿时长

22 weeks

期刊介绍： International Journal of Aerospace Engineering aims to serve the international aerospace engineering community through dissemination of scientific knowledge on practical engineering and design methodologies pertaining to aircraft and space vehicles. Original unpublished manuscripts are solicited on all areas of aerospace engineering including but not limited to: -Mechanics of materials and structures- Aerodynamics and fluid mechanics- Dynamics and control- Aeroacoustics- Aeroelasticity- Propulsion and combustion- Avionics and systems- Flight simulation and mechanics- Unmanned air vehicles (UAVs). Review articles on any of the above topics are also welcome.