Equivalent Dynamic Model for Large Parabolic Cylindrical Deployable Mechanism

With the development of the space industry and the demand of future complex space missions, large space deployable antennas require high deployable ratio, high precision, and lightweight. A large parabolic cylindrical deployable (PCD) mechanism with a multilayer tape-spring (MLTS) hinge was proposed...

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Bibliographic Details
Published in:AIAA journal 2022-12, Vol.60 (12), p.6739-6752
Main Authors: Yang, Hui, Feng, Jian, Wang, Yan, Xiao, Hong, Liu, Yongbin
Format: Article
Language:English
Subjects:
Accuracy
Antennas
Automation
Beam theory (structures)
Cantilever beams
Carbon fibers
College professors
Continuum modeling
Dynamic models
Electrical engineering
Energy
Energy methods
Equivalence
Finite element analysis
Finite element method
Hinges
Kinetic energy
Modal analysis
Multilayers
Space missions
Stiffness
Timoshenko beams
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Summary:With the development of the space industry and the demand of future complex space missions, large space deployable antennas require high deployable ratio, high precision, and lightweight. A large parabolic cylindrical deployable (PCD) mechanism with a multilayer tape-spring (MLTS) hinge was proposed. The energy method was adopted to establish the equivalent dynamic model of the large PCD mechanism with MLTS hinges. The new problems encountered in the dynamic analysis of the new mechanism are solved. First, the nonlinear effects of the tape-spring hinges and cable in the PCD mechanism were considered. The relationship equations of strain and kinetic energy were derived. Then, the stiffness and mass matrices of the PCD mechanism were obtained. Based on Timoshenko beam theory, the modal analysis of the PCD mechanism in cantilever state was conducted. The finite element method was used to verify the correctness of the equivalent continuum model of the large PCD mechanism with MLTS hinges. The equivalent dynamic analytical method can be applied to the spatial large deployable mechanism.
ISSN:0001-1452
1533-385X
DOI:10.2514/1.J062019