Volume 30 Issue 9
Sep.  2015
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CHENG Li, GAO Jun-yu, QU Ke, LI Shuai-ying. Influence on macroscopic stiffness of rotor mesostructure based on finite element method[J]. Journal of Aerospace Power, 2015, 30(9): 2196-2202. doi: 10.13224/j.cnki.jasp.2015.09.019
Citation: CHENG Li, GAO Jun-yu, QU Ke, LI Shuai-ying. Influence on macroscopic stiffness of rotor mesostructure based on finite element method[J]. Journal of Aerospace Power, 2015, 30(9): 2196-2202. doi: 10.13224/j.cnki.jasp.2015.09.019
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Influence on macroscopic stiffness of rotor mesostructure based on finite element method

doi: 10.13224/j.cnki.jasp.2015.09.019

  • 1. Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an 710038, China;

  • 2. Collaborative Innovation Center of Advanced Aero-Engine, Beijing 100191, China;

  • 3. School of Aerospace, Xi'an Jiaotong University, Xi'an 710049, China

  • Received Date: 2014-03-30
  • Publish Date: 2015-09-28
    Abstract
  • A research thought of establishing the mapping function based on the rules of dynamics parameters of macroscopic system due to the non-linear behavior of mesostructure for rotor system was put forward which based on finite element method, and then the dimensions of rotor systems were reduced legitimately. By simplifying the rotor model of contact structure of rod bolt in a type of engine disk appropriately, the effects of inhomogeneous rod bolt preload on the rotor macroscopic stiffness under different eccentric states of disks were analysed with ANSYS, nonlinear characteristics of stiffness were obtained.Results show that, when the bolts are evenly preloaded, along with the change of preload forces,the variation trend of nonlinear characteristics is related to the eccentric angle alteration; when half of the bolts are loose, the eccentric angle is larger while the loose preload forces are smaller, and the nonlinear characteristics are more obvious.

     

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