应用数学和力学2026，Vol.47Issue(3)：273-287,15.DOI:10.21656/1000-0887.460040
大型复杂航天器刚-液-柔耦合动力学研究
Coupling Dynamics Research of Large Complex Rigid-Liquid-Flexible Spacecrafts
摘要
Abstract
To accomplish long-duration and complex orbit flight missions,next-generation spacecrafts need to carry large flexible structures and high-capacity liquid fuel tanks.The nonlinear coupling problems between rigid body motion,liquid sloshing,and flexible structure vibrations become particularly significant during spacecraft maneuvering and control processes.A dynamic model for rigid-liquid-flexible coupling systems was presented,to first calculate the vibration of the flexible structure with the Kirchhoff-Love plate theory and the finite ele-ment methods.Then the flow theory was employed to model liquid fuel sloshing,and finally the overall dynamic model for the coupling system was derived with the Lagrange method.The study reveals the coupling dynamic interactions between rigid body motion,liquid sloshing,and flexible structure vibrations.The proposed model-ing approach for rigid-liquid-flexible coupling spacecrafts was validated by comparison with published experi-mental and analytical results.The coupling analysis of complex,liquid-filled spacecrafts with large,flexible structures shows that,the finite element method can accurately capture the dynamic responses of high-frequen-cy modes of the flexible structures.Additionally,due to the low-frequency characteristics of these large and complex space structures,the coupling effects with liquid fuel sloshing become even more pronounced.关键词
液体晃动/复杂柔性附件/有限元方法/刚-液-柔耦合Key words
liquid sloshing/complex flexible structure/finite element method/rigid-liquid-flexible coupling分类
数理科学引用本文复制引用
闫森,岳宝增,马伯乐..大型复杂航天器刚-液-柔耦合动力学研究[J].应用数学和力学,2026,47(3):273-287,15.基金项目
国家自然科学基金(重点项目)(12132002) （重点项目）
