Equivalent continuum modeling method for transient response analysis of large space truss structures with nonlinear elastic joints

Liu, Fushou; Jin, Dongping; Li, Xinyuan; Guo, Wei

doi:10.1007/s00707-023-03565-8

Cited by 3 publications

(1 citation statement)

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“…With the increasing demands of space missions and the rapid development of space technology, the requirements and prospects of large-scale space structures with a size of hundreds of meters or even kilometers are becoming more and more extensive [1][2][3]. For large space structures, due to their large sizes and masses, the gravity gradient torque is affected by the variation of their attitudes.…”

Section: Introductionmentioning

confidence: 99%

Stability Analysis and Dynamic Simulations for Gravity Gradient of a Large Rigid Space Structure

Tang,

Sun,

Jin

2024

Preprint

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The attitude dynamics and orbit dynamics of large rigid space structures are coupled with each other under gravity gradient, which may affect the stability of the large rigid space structures. In this paper, the gravity gradient stability of a large rigid space structure is studied under both small and large disturbances. Based on the rigid body dynamics and orbit dynamics, an accurate dynamic model without any linearization of the large rigid space structure is established via the natural coordinate formulation (NCF), which is able to describe the large overall motions of the structures. By using the generalized-α algorithm, the gravity gradient stability of the large rigid space structure is simulated and analyzed via various examples, including the influence of large disturbance angles, the positions at the stabilization and unstabilization regions. Finally, the relationship between spinning stability and gravity gradient stability is also investigated via a large spinning space structure.

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Section: Introductionmentioning

confidence: 99%