• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2020, Vol. 56 ›› Issue (5): 80-92.doi: 10.3901/JME.2020.05.080

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Recent Progress on Weave-reinforced-shape-memory-composite Based Space Deployable Truss

GAO Jifeng1, FANG Guangqiang2,3, YU Bing2,3, FAN Pengxuan1, CHEN Wujun1, ZHAO Bing1, CAO Zhengli2,3   

  1. 1. Space Structures Research Center, Shanghai Jiao Tong University, Shanghai 200240;
    2. Institute of Aerospace System Engineering Shanghai, Shanghai 201108;
    3. Space Structure and Mechanism Technology Laboratory of China Aerospace Science and Technology Group Co. Ltd, Shanghai 201108
  • Received:2019-03-20 Revised:2019-06-04 Online:2020-03-05 Published:2020-04-23

Abstract: The manufacture, shape memory mechanical behavior, multi-scale mechanical model and test of a particular weave-reinforced shape memory polymer composite oriented on large space deployable truss is summarized. The longitudinal rod is a thin-walled pipe made of two-dimensional weave-reinforced composite, which is prepared by adding the two-dimensional carbon fabric to the shape memory epoxy resin. The shape memory properties can be controlled by adjusting the ratio of matrix resin to curing agent. The shape memory constitutive model is formulated according to the phase transition theory and validated by the three-point bending test. The homogenized ABD stiffness matrix of the composite is calculated by microscopic, mesoscopic and macroscopic multi-scale methods. A beam element for the thin-walled tube is derived according to the Kirchhoff hypothesis. The advanced ground platform is developed to demonstrate that the shape memory deployable truss unit has a package ratio of 50:1 and a shape recovery rate is around 100%.

Key words: space deployable truss, weave-reinforced composite, shape memory constitutive model, ABD stiffness matrix, composite beam element

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