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Volume 39 Issue 2
Feb.  2013
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Journal of Beijing University of Aeronautics and Astronautics  > 2013  >  39(2): 148-153,163.
Zhang Li, Hong Jie, Ma Yanhonget al. Modeling method and vibration characteristics of aero-engine rotor system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(2): 148-153,163. (in Chinese)
Citation: Zhang Li, Hong Jie, Ma Yanhonget al. Modeling method and vibration characteristics of aero-engine rotor system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(2): 148-153,163. (in Chinese)
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Modeling method and vibration characteristics of aero-engine rotor system

  • 1.

    Shenyang Aeroengine Research Institute, Shenyang 110015, China

  • 2. School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 27 May 2011
  • Publish Date: 28 Feb 2013
    Abstract
  • According to the structural and mechanical properties of rotor system on the modern turbofan engine, an investigation about the finite element modeling technology and dynamic characteristics of low-pressure rotor was proposed, based on the finite element method (FEM). The finite element model of rotor system was developed by 2D beam element and 3D solid element separately and the dynamic characteristics were analyzed. Then a principle of finite element modeling, which is called equivalent-disk method, was presented. The equivalent-disk method regards the blades of rotor system as a rigid ring and changes the periodic model into axisymmetric model, which is favorable for FEM software in solving. It can not only keep the structural and mechanical properties of rotor system, but also control the scale of FEM model. The result indicates that this kind of equivalent method can improve the modeling techniques of rotor system on the turbofan engine and it is applicable in engineering.

     

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