dumbbell model
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Aerospace ◽  
2022 ◽  
Vol 9 (1) ◽  
pp. 33
Author(s):  
Minghe Shan ◽  
Lingling Shi

The space debris problem poses a huge threat to operational satellites and has to be addressed. Multiple removal methods have been proposed to keep Earth’s orbit stable. Flexible connection capturing methods, such as the harpoon system, tether–gripper system and the net system, are potential candidate methods for space debris removal in the future. However, the tethered system is usually assumed as a dumbbell model where two end masses are connected by a rigid bar. This traditional model is not accurate enough to predict the motion of the target, neither the whole system. In this paper, three models, namely the modified dumbbell model, lumped-mass model and the ANCF model, to describe a tethered post-capture system for space debris removal are described and compared. Moreover, modal analysis of the tethered system is performed, and an analytical solution of the system’s natural frequency is derived. In addition, two configurations of the tethered system, namely the single tether configuration and the sub-tether configuration are simulated and compared based on three models, respectively. Finally, the influence on the chaser satellite by the initial angular velocity of the target is analyzed.



2021 ◽  
Vol 304 ◽  
pp. 467-490
Author(s):  
Zhaonan Luo ◽  
Wei Luo ◽  
Zhaoyang Yin




Nonlinearity ◽  
2021 ◽  
Vol 34 (5) ◽  
pp. 2715-2749
Author(s):  
Dominic Breit ◽  
Prince Romeo Mensah




2021 ◽  
Vol 23 (15) ◽  
pp. 9065-9069
Author(s):  
Tomasz Skóra ◽  
Mihail N. Popescu ◽  
Svyatoslav Kondrat

We study how crowding affects the activity and catalysis-enhanced diffusion of enzymes and passive tracers by employing a fluctuating-dumbbell model of conformation-changing enzymes.



2020 ◽  
Vol 32 (6) ◽  
pp. 063101 ◽  
Author(s):  
D. Shogin ◽  
P. A. Amundsen




2019 ◽  
Vol 47 (4) ◽  
pp. 143-154 ◽  
Author(s):  
Takashi Uneyama ◽  
Fumiaki Nakai ◽  
Yuichi Masubuchi


2019 ◽  
Vol 343 ◽  
pp. 522-537
Author(s):  
Wei Luo ◽  
Zhaoyang Yin
Keyword(s):  


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