Design and Analysis of the Adaptive Connecting Mechanism between the Cable-net and Panel of Five-hundred-meter Aperture Spherical Radio Telescope

被引：2
|
作者：
Li Q. [1 ,2 ]
Jiang P. [1 ,2 ]
Nan R. [1 ,2 ]
机构：
[1] National Astronomical Observatories, Chinese Academy of Sciences, Beijing
[2] Key Laboratory of Radio Astronomy, Beijing
来源：
Jiang, Peng (pjiang@bao.ac.cn) | 2017年 / Chinese Mechanical Engineering Society卷 / 53期
关键词：
Active reflector; Adaptive connecting mechanism; Cable-net structure; Finite element; Five-hundred-meter aperture spherical radio telescope;
D O I：
10.3901/JME.2017.07.062
中图分类号：
学科分类号：
摘要：
The reflector system of the five-hundred-meter aperture spherical radio telescope (FAST) is designed as rigid panels supported by a flexible cable-net structure. Shape-changing operation in process of observation will lead to relative displacements between the adjacent nodes of the cable-net. Meanwhile, three nodes on a rigid panel are fixed relatively. Thus, adaptive connecting mechanisms between panels and the cable-net are certainly needed to avoid the influence of additional stress during shape-changing operation. The present work focuses on the following aspects according to the technical requirements of FAST. The degrees of freedom and the structure of the adaptive connecting mechanisms are designed, and the finite element model of the reflector system with the adaptive connecting mechanisms is established. Then the theoretical algorithm is applied to verify the results calculated by the finite element analysis. The finite element analysis is carried out to calculate the scope of motion of adaptive connecting mechanisms during the shape-changing of the cable-net, thus providing input parameters for the design of adaptive connecting mechanisms. © 2017 Journal of Mechanical Engineering.
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页码：62 / 68
页数：6
相关论文
共 15 条
  • [1] Nan R., Ren G., Zhu W., Et al., Adaptive cable mesh reflector for the FAST, Acta Astronomica Sinica, 44, pp. 13-18, (2003)
  • [2] Li G., Shen L., Luo Y., Et al., Analysis for reflector aluminum mesh panels of five-hundred meter aperture spherical telescope, Astrophysics and Space Science, 278, 1, pp. 225-230, (2001)
  • [3] Yao R., Zhu W., Huang P., Accuracy analysis of Stewart platform based on interval analysis method, Chinese Journal of Mechanical Engineering, 26, 1, pp. 29-34, (2013)
  • [4] Luo Y., Yu Q., Li G., Et al., Nonlinear analysis of supporting tensegrity structure for reflector of large radio telescope, Journal of Tongji University, 31, 1, pp. 1-5, (2000)
  • [5] Ren G., Lu Q., Zhou Z., On the cable car feed support configuration for FAST, Astrophysics and Space Science, 278, 1, pp. 243-247, (2001)
  • [6] Lu Y., Ren G., Simulation of the cable mesh reflector for the large radio telescope FAST, Engineering Mechanics, 24, 10, pp. 165-169, (2007)
  • [7] Luo Y., Deng C., Li G., Et al., Structural analysis of the reflector supporting system of the 500m active spherical telescope, Journal of Tongji University, 28, 4, pp. 497-501, (2000)
  • [8] Qian H., Fan F., Shen S., Et al., Analysis on cable-net structure supporting the reflector of FAST, Journal of Harbin Institute of Technology, 37, pp. 750-752, (2005)
  • [9] Qian H., Fan F., Shen S., Et al., The cable-net structure supporting the reflector of FAST, China Civil Engineering Journal, 38, 12, pp. 18-23, (2005)
  • [10] Jiang P., Nan R., Qian L., Et al., System solutions study on the fatigue of the FAST cabel-net structure caused by form-changing operation, Research in Astronomy and Astrophysics, 15, pp. 1758-1772, (2015)
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