Bifurcation and Nonlinear Dynamic Analysis of Externally Pressurized Double Air Films Bearing System | Zendy

ChengChi Wang | Zendy; Chin-Chia Liu | Zendy; Chi-Chang Wang | Zendy

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Bifurcation and Nonlinear Dynamic Analysis of Externally Pressurized Double Air Films Bearing System

Author(s) -

ChengChi Wang,

Chin-Chia Liu,

Chi-Chang Wang

Publication year - 2014

Publication title -

mathematical problems in engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.262

H-Index - 62

eISSN - 1026-7077

pISSN - 1024-123X

DOI - 10.1155/2014/798374

Subject(s) - bearing (navigation) , bifurcation , rotor (electric) , nonlinear system , helicopter rotor , differential (mechanical device) , chaotic , mechanics , structural engineering , control theory (sociology) , engineering , computer science , physics , mechanical engineering , aerospace engineering , control (management) , quantum mechanics , artificial intelligence

This paper studies the chaotic and nonlinear dynamic behaviors of a rigid rotor supported by externally pressurized double air films (EPDAF) bearing system. A hybrid numerical method combining the differential transformation method and the finite difference method is used to calculate pressure distribution of EPDAF bearing system and bifurcation phenomenon of rotor center orbits. The results obtained for the orbits of the rotor center are in good agreement with those obtained using the traditional finite difference approach. The results presented summarize the changes which take place in the dynamic behavior of the EPDAF bearing system as the rotor mass and bearing number are increased and therefore provide a useful guideline for the bearing system

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