Optimization Analysis of Microgravity Experimental Facility for the Deployable Structures Based on Force Balance Method
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ORIGINAL ARTICLE
Optimization Analysis of Microgravity Experimental Facility for the Deployable Structures Based on Force Balance Method Zhicheng Song 1 & Chuanzhi Chen 1 & Song Jiang 2 & Jinbao Chen 1 & Tianming Liu 2 & WeiHua Deng 3 & Fei Lin 4 Received: 25 February 2020 / Accepted: 2 June 2020 # Springer Nature B.V. 2020
Abstract Ground-based microgravity experiment facility for large deployable structures based on the force balance was used in deployment function experiments and profile precision estimations. Considering how to exert the balance force in an accurate and efficient way to reduce its adverse effects and improve the realism of the simulated space environment. In this paper, a deformation displacement model of deployable structures under the effects of balance forces and gravity was established based on the finite element theory. The effects of the number, and the distribution form, of balance forces on deformation displacement of deployable structures were examined, and the optimal values of balance forces were derived using the genetic algorithm. The results shows that the effectiveness of the ground-based microgravity experiment facility for large deployable structures can be significantly improved by appropriately selecting the number and the distribution form of balance forces, and optimizing the values of balance forces. Keywords Finite element method . The deployable structure . Force balance method . Genetic algorithm . Microgravity experimental facility
Introduction The large deployable structure is the main component of space exploration mission, has been widely used in resources exploration, electronic reconnaissance, deep space exploration and other key national core technology areas (Guo et al. 2019; Yin et al. 2018; Hu et al. 2015). There are many factors that affect its deployable process including contains a large number of parts, friction, clearance. Moreover, the microgravity environment has a great influence on materials, structures, electromagnetism etc. (Wang et al. 2019). Hence, it is difficult to predict the development process and eliminate all kinds of faults directly through theoretical analysis. However, it is * Chuanzhi Chen [email protected] 1
Key Laboratory of Exploration Mechanism of the Deep Space Planet Surface, Ministry of Industry and Information Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2
Shanghai Academy of Spaceflight Technology, Shanghai, China
3
Aerospace Dongfanghong Satellite Co.Ltd, Beijing 100094, China
4
Jiujiang University, Jiujiang, China
extremely expensive to launch the equipment into the space environment for experiments. Considering the experimental cost and feasibility, most large apace deployable structures adopt ground simulation experiments for functional verification (Mengliang 2007). The simulation method of microgravity environment mainly includes motion balance method, force balance method and hybrid simulation method (Zhu et al. 2018; Wen-Hui et al. 2014). There are free falling body
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