Volume 36 Issue 12
Dec.  2021
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Article Navigation >  Journal of Aerospace Power  > 2021  >  36(12): 2490-2502
YU Pingchao, ZHAO Zhimei, HOU Li, CHEN Guo. Analysis on analytical modelling and damping characteristics of bolted joint structure with spigot[J]. Journal of Aerospace Power, 2021, 36(12): 2490-2502. doi: 10.13224/j.cnki.jasp.20210297
Citation: YU Pingchao, ZHAO Zhimei, HOU Li, CHEN Guo. Analysis on analytical modelling and damping characteristics of bolted joint structure with spigot[J]. Journal of Aerospace Power, 2021, 36(12): 2490-2502. doi: 10.13224/j.cnki.jasp.20210297
shu

Analysis on analytical modelling and damping characteristics of bolted joint structure with spigot

doi: 10.13224/j.cnki.jasp.20210297
  • 1.

    College of Civil Aviation，Nanjing University of Aeronautics and Astronautics，Nanjing 211106，China

  • 2.

    Commercial Aircraft Engine Company Limited，Aero Engine Corporation of China，Shanghai 200241，China

  • Received Date: 2021-06-12
  • Publish Date: 2021-12-28
    Abstract
  • For the bolted joint with spigot，a nonlinear model for the single region of bolted joint under axial loads was built.Based on this model，the nonlinear analytical model was further proposed to describe the behavior of joint under bending moment.By performing a comparison study with the finite contact element model，the accuracy of the analytical model was validated，meanwhile，the nonlinear stiffness and damping characteristics of the joint were highlighted.Finally，the influence law of key parameters on joints' damping characteristics was investigated.The results showed that the ability of damping dissipation of bolted joint firstly increased and then decreased with the increase of bending moment amplitude and friction coefficient，while the ability of damping dissipation increased for the increasing interference fit of spigot and flange length.More importantly，flange length can not only affect the damping characteristics，but also decrease the equivalent stiffness of bolted joint significantly.

     

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