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Volume 42 Issue 2
Feb.  2016
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Journal of Beijing University of Aeronautics and Astronautics  > 2016  >  42(2): 251-257.
OUYANG Xiaoping, XUE Zhiquan, PENG Chao, et al. Analysis on aircraft cylinder seal property based on mixed lubrication theory[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(2): 251-257. doi: 10.13700/j.bh.1001-5965.2015.0387(in Chinese)
Citation: OUYANG Xiaoping, XUE Zhiquan, PENG Chao, et al. Analysis on aircraft cylinder seal property based on mixed lubrication theory[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(2): 251-257. doi: 10.13700/j.bh.1001-5965.2015.0387(in Chinese)
shu

Analysis on aircraft cylinder seal property based on mixed lubrication theory

doi: 10.13700/j.bh.1001-5965.2015.0387
  • 1.

    State Key Laboratory of Fluid Power & Mechatronic Systems, Zhejiang University, Hangzhou 310027, China

  • 2. Nanjing Engineering Institute of Aircraft Systems, Jincheng, AVIC, Nanjing 211106, China

  • Received Date: 12 Jun 2015
  • Publish Date: 20 Feb 2016
    Abstract
  • Aimed to investigate the influences of working conditions such as different pressures, temperatures and velocities on the performance of the seal of the aircraft cylinder, the Turcon VL seal from Trelleborg AB was analyzed based on the mixed lubrication theory. The macro and micro multi-field coupling model based on the mixed lubrication theory was built, which mainly includes fluid model with cavitation and fluid factors in Reynolds equation, micro contact model of Greenwood-Williamson(G-W) and heat transfer model of Fourier. By computing the model with finite volume method, the characteristics of macro contact pressure, micro contact pressure and oil pressure distribution under different fluid pressures were analyzed. The research results show that the seal leakage and friction increases nearly linearly with the fluid pressure increasing, the seal has no leakage at 25℃ but has some at 135℃, and the seal friction decreases but leakage increases with the cylinder velocity increasing.

     

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