• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2020, Vol. 56 ›› Issue (7): 35-43.doi: 10.3901/JME.2020.07.035

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Design and Optimization of a Tri-prism Deployable Membrane Support Arm Using Lenticular Collapsible Composite Tubes

LI Bingyan1, LIU Rongqiang1, CONG Qiang2, GUO Hongwei1, LIN Qiuhong2, DENG Zongquan1   

  1. 1. State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001;
    2. Beijing Institute of Spacecraft System Engineering, Beijing 100094
  • Received:2019-05-24 Revised:2019-11-12 Online:2020-04-05 Published:2020-05-12

Abstract: Large-scale deployable support arms have the potential to be widely used in space missions. Conventional support arms mainly utilize alloy material, but the recently developed lightweight lenticular collapsible composite tube (LCCT) which utilizes lightweight composite material will greatly reduce the overall mass of space structures. A tri-prism deployable membrane support arm using LCCT is proposed, designed and optimized in this research with consideration of the membrane antenna application background. The parameterized model of LCCT support arm is established to illuminate the relationships between its stiffness parameters and geometrical parameters. According to the analysis of the design objective function of the support arm, the section parameters of LCCT are selected. The dynamic optimization model of the tri-prism support arm is studied, and the optimal design of the unit number, the outer diameter and thickness of frame tubes, the diameter and prestress of cables is carried out to realize the minimum ratio of mass to fundamental frequency for the membrane support arm. The optimization results of cable prestress and unit number are analyzed, and the effect of parameter optimization on the improvement of support arm mechanical properties is studied.

Key words: collapsible composite tube, tri-prism, support arm, deployable structure, parameter optimization

CLC Number: