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Volume 42 Issue 2
Feb.  2016
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Journal of Beijing University of Aeronautics and Astronautics  > 2016  >  42(2): 345-350.
LIU Yu, WANG Jianjun. Analysis on contact characterizations of new looseproof pipeline connection[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(2): 345-350. doi: 10.13700/j.bh.1001-5965.2015.0131(in Chinese)
Citation: LIU Yu, WANG Jianjun. Analysis on contact characterizations of new looseproof pipeline connection[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(2): 345-350. doi: 10.13700/j.bh.1001-5965.2015.0131(in Chinese)
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Analysis on contact characterizations of new looseproof pipeline connection

doi: 10.13700/j.bh.1001-5965.2015.0131

  • School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 11 Mar 2015
  • Publish Date: 20 Feb 2016
    Abstract
  • The contact characterizations of new lock pipeline connection, which is used in aircraft engine, were investigated in the installation and loosening process. Firstly, the entire installation and loosening process was divided into three stages. The friction and contact pressure in the three stages were respectively deduced,and the variation of friction and contact pressure was analyzed. Secondly, the axisymmetric finite element model of pipeline connection was established, and nonlinear transient analysis was made. Finally, the displacement load was applied to the finite element model to simulate the installation and loosening process, and the variations of slippage, connection pressure, friction, and contact stresses were analyzed. Besides, the influences of different preloads on the contact stresses of pipeline connection were studied. The analysis results show that the loosening process can be divided into two stages before and after the sliding point; the contact characterizations of the two stages differ obviously. The contact characterizations of pipeline relate only to the parameters of contact surface and the value of preload, but not to the radius of pipeline, materials or any other thing. The variation of contact characterizations of the installation and loosening process can be applied to the pipeline connection designing.

     

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