Journal of Northeastern University ›› 2013, Vol. 34 ›› Issue (9): 1296-1299.DOI: -

• Mechanical Engineering • Previous Articles     Next Articles

Dynamic Similarity Design of Rolling Ball Bearing in BearingRotor System

LUO Zhong, CHEN Xiaobing, YU Qingwen, ZHANG Haijun   

  1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China.
  • Received:2013-02-22 Revised:2013-02-22 Online:2013-09-15 Published:2013-04-22
  • Contact: CHEN Xiaobing
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Abstract: For bearing dynamic similarity design problem of bearingrotor system scale model, the dynamic similar criterion of rolling ball bearing was established on the basis of dimensional analysis and similarity π theorem. Similar relations of all dynamic parameters between the model and prototype were obtained. Based on stiffness calculation formula of rolling ball bearing, similar relations between stiffness and basic parameters were achieved. Meanwhile the contact total deformation and minimum oil film thickness were calculated and verified. The validity and practicability of the asestablished relations are illustrated in design of actual bearingrotor model through a design example.

Key words: rolling ball bearing, bearingrotor system, dynamic similarity, stiffness, design

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