ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Structural design and stiffness analysis of deployable tensegrity mast
Received date: 2023-02-20
Revised date: 2023-03-20
Accepted date: 2023-04-12
Online published: 2023-04-21
Supported by
National Natural Science Foundation of China(51835002);National Key R&D Program of China(2018YFB1307900);Graduate Education Innovation Project of Shanxi Province(2022Y212)
To meet the needs of aerospace engineering for space deployable mast， two types of space deployable masts were designed by taking advantage of the characteristics of tensegrity structure： light weight， adjustable stiffness， good stability and easy folding. Firstly， based on the ground structure method and mixed integer linear programming method， the topology form-finding of the deployable tensegrity mast structure element was performed to obtain various element configurations. Then， using the modified Maxwell's criterion and singular value decomposition method of structural equilibrium matrix， the stability assessment and stiffness comparison of each element configuration were completed， from which two element configurations were preferred. Combining these two element configurations with the modular design idea， two types of deployable tensegrity masts were obtained separately through axial topology. Finally， the finite element model of the deployable tensegrity mast was established， and the influence of prestress level， constraint mode and cross-sectional area of the cable members on the bending stiffness of the deployable mast was analyzed and discussed， as well as the relationship between the stiffness of the two types of deployable masts under different circumstances. The research results provide a selection scheme for the deployable tensegrity mast and offer some theoretical support for enhancing the bearing capacity of the deployable mast.
Key words： tensegrity; deployable mast; ground structure; topology form-finding; stability; stiffness
Jing ZHANG , Kai GUO , Hongwei GUO , Rongqiang LIU , Ziming KOU . Structural design and stiffness analysis of deployable tensegrity mast[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023 , 44(24) : 228584 -228584 . DOI: 10.7527/S1000-6893.2023.28584
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