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Volume 32 Issue 06
Jun.  2006
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Journal of Beijing University of Aeronautics and Astronautics  > 2006  >  32(06): 649-653.
Hong Jie, Deng Yin, Zhang Dayiet al. Dynamic design method of elastic ring squeeze film damper[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(06): 649-653. (in Chinese)
Citation: Hong Jie, Deng Yin, Zhang Dayiet al. Dynamic design method of elastic ring squeeze film damper[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(06): 649-653. (in Chinese)
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Dynamic design method of elastic ring squeeze film damper

  • School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 06 Jul 2005
  • Publish Date: 30 Jun 2006
    Abstract
  • A high efficient oil film damper which is known as elastic ring squeeze film damper (ERSFD) has special dynamical characteristics based on the conventional squeeze film damper (SFD). The characteristics of a gas turbine engine with ERSFD including the supporting stiffness of the elastic ring, the distribution of pressure field and oil film damping were investigated by taking advantage of the elastic deformation of the elastic ring. For ERSFD, finite element method not only has the advantages of simple modeling and small computation work, but also can be used in appropriate boundary conditions, for various damper sealing configurations. It was indicated that the calculative methods and results were put forward contributing to the preliminary design modification of the current body structure. Compared with SFD, the oil film clearance of ERSFD is divided into several parts. It can automatically adjust the oil film clearance by taking advantage of the elastic deformation of the elastic ring, which controls the oil film clearance in a suitable range. ERSFD has optimal effect on reducing nonlinear vibration markedly.

     

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  • [1] 晏砺堂,朱梓根,宋兆泓,等. 结构系统动力特性分析[M] 北京:北京航空航天大学出版社,1989:256-257 Yan Litang ,Zhu Zigen ,Song Zhaohong, et al. Dynamical characteristic analyse of configuration system[M]. Beijing:Beijing University of Aeronautics and Astronautics Press, 1989:256-257(in Chinese) [2] 闻邦椿,顾家柳,夏松波,等.高等转子动力学[M]. 北京:机械工业出版社, 1999:270-272 Wen Bangchun, Gu Jialiu, Xia Songbo, et al. Advanced rotor dynamics . Beijing:China Machine Press, 1999:270-272(in Chinese) [3] Yin Xianjun, Wang Xiu, Qualitative study on multiplicity of largely deformed elastic half rings[J]. European Journal of Mechanics A/Solids, 2003,22:463-474 [4] 张大义,母国新,洪杰. 航空发动机转子支承系统刚度计算中的几个问题 .战术导弹技术, 2005(2):20-23 Zhang Dayi, Mu Guoxin, Hong Jie. Rigidity calculation methods for rotor supporting system in gas engine[J]. Tactical Missile Technology, 2005(2):20-23 [5] 周明. 弹性环式挤压油膜阻尼器理论与实验研究 . 北京:北京航空航天大学动力系, 1996 Zhou Ming. Theoretical and experimental investigation on the elastic ring squeeze film damper . Beijing:Dept of Propulsion, Beijing University of Aeronautics and Astronautics, 1996
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