Xu Wanfu  Wen Zhijian  Xu Lifu

(Lubrication Technology Research Center, Shenyang Institute of Technology, Shenyang 110016)

Liu Yuchuan

(State Key Laboratory of Tribology, Tsinghua University, Beijing 100084)

Shen Xinmin

(School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautic, Beijing 100083)

Abstract: To examine commercially high speed (18 000 r/min) dry running non-contacting gas seals, Rotor system of test-bed operated over the critical speed with flexible, squeeze film damper support is designed successfully, including theoretical analysis of characteristics for the ratcage flexible support and the narrow approximation film damper, and transient response for the rigid rotor system. After running during these three years, it has achieved an excellent dynamics property by experimental investigatfon. And unsteady phenomena of “bistable” or “lock up” vanish from process of starts or stops.

Key words: Squeeze film damper   Flexible support rotor system   Controlling vibration of high speed rotating    Running test of dry running gas seals

CLC No: TH13  O3

沈阳市科学技术局科学技术计划(01Z02062)资助项目. Received 20031023, received in revised form 20040328