Journal of Astronautics ›› 2019, Vol. 40 ›› Issue (5): 570-576.doi: 10.3873/j.issn.1000-1328.2019.05.010

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Numerical Simulation and Analysis on Flattening Process of Composite TRAC Boom

YANG Hui, LIU Lian, LIU Rong qiang, LIU Yong bin   

  1. 1. College of Electrical Engineering and Automation, Anhui University, Hefei 230601, China; 2. State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
  • Received:2018-07-11 Revised:2019-02-02 Online:2019-05-15 Published:2019-05-25

Abstract:

In order to avoid the fatigue crack because of the stress concentration of the hyper-elastic boom and prolong its service life, the flattening finite element model for a triangular retractable and collapsible(TRAC)boom is established by the ABAQUS software, the S4R shell unit and the cohesive bonding unit. The explicit dynamic method is used to carry out the non-linear numerical simulation analysis for the flattening process of the TRAC boom, with single material, layering manners of two materials and TRAC boom stress characteristics for different layering angles compared, the layering method with the least stress is selected. This study is of great significance for the reasonable selection of the optimal lamination method for a TRAC boom in a deployable mechanism.

Key words: Deployable mechanism, TRAC boom, Flattening process, Explicit dynamic method;Composite material

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