A Study on Indicial Response Characteristics of a Gas-Lubricated Spiral-Grooved proceeding Bearing

  • Yabe, H. (Faculty of Engineering, Osaka Electro-Communication University) ;
  • Kaneshiro, T. (Graduate School of Engineering, Kyoto University) ;
  • Hirayama, T. (Faculty of Science and Technology, Ryukoku University)
  • 발행 : 2002.10.21

초록

Indicial response characteristics of a rotor supported by a gas-lubricated, spiral-grooved proceeding bearing are studied theoretically to develop a fundamental investigation for the bearing design with considering NRRO characteristics. The trajectory of rotor movement is calculated by applying the non-linear orbit scheme against a prescribed impulse load, then two characteristic quantities are introduced to evaluate the indicial response performance of the bearing, i.e., 'maximum deviation of rotor center' and 'integrated rotor center deviation'. The effects of some design parameters of spiral grooves to these representative quantities are studied so that 'robust' design against impulse load is discussed.

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