Journal of Northeastern University Natural Science ›› 2015, Vol. 36 ›› Issue (3): 402-405.DOI: 10.12068/j.issn.1005-3026.2015.03.022

• Mechanical Engineering • Previous Articles     Next Articles

Design of Dynamic Similarity Model of Rotor System Considering the Bearing Stiffness

LUO Zhong, CHEN Guang-kai, LI Jian-zhang, WANG Fei   

  1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China.
  • Received:2014-01-20 Revised:2014-01-20 Online:2015-03-15 Published:2014-11-07
  • Contact: LUO Zhong
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Abstract: To solve the design problem of dynamic similarity model experiment of bearing-rotor system, a design method of scale geometric distortion model was proposed. This model could keep the same intrinsic characteristics between the prototype and experimental verification. First, the dynamic similarity relations of rotor system were deduced by adopting integral simulation method. According to the theory of dimension analysis, the similarity relation of bearing support stiffness was established. Based on this, the model was designed to satisfy the intrinsic characteristic of prototype. The ANSYS simulation contrasts of the prototype and model were given. In order to demonstrate the validity of this method, experimental verification was given to verify the validity of the proposed design method of dynamic similarity.

Key words: bearing-rotor system, dynamic similarity, distortion model, intrinsic characteristics, modal analysis

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