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Investigation Into the Performance of the VL Seal Based on the 3D Model

[+] Author Affiliations
Chao Peng, Xiaoping Ouyang, Guofang Gong, Huayong Yang

Zhejiang University, Hangzhou, China

Qinghe Zhou

Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration, Nanjing, China

Paper No. FPMC2017-4236, pp. V001T01A017; 7 pages
doi:10.1115/FPMC2017-4236
From:
  • ASME/BATH 2017 Symposium on Fluid Power and Motion Control
  • ASME/BATH 2017 Symposium on Fluid Power and Motion Control
  • Sarasota, Forida, USA, October 16–19, 2017
  • Conference Sponsors: Fluid Power Systems and Technology Division
  • ISBN: 978-0-7918-5833-2
  • Copyright © 2017 by ASME

abstract

Reciprocating rod seals play an important role in the aviation hydraulic system. As a new type of the aerospace reciprocating seal, VL seal is gradually used in crucial and complicated working conditions. When the seal is installed in the groove, there is large deformation in the circumferential direction, which would cause the deviation while the traditional axisymmetric 2D model is used for analyzing its performance. Therefore the new 3D finite element model is developed in this paper to obtain more accurate results of the contact pressure and the stress of the VL seal. Furthermore a mixed lubrication model combined with the 3D model is implemented to obtain the friction and leakage characteristics of the VL seal, which is composed of the fluid lubrication model, the micro contact model and the deformation model. The performance of the seal in the outstroke and instroke is studied respectively and the effects of different working velocities on the seal are also discussed. The analysis results show that the 3D model can demonstrates more comprehensive performance than the traditional axisymmetric model when there is a tangential strain in the VL seal.

Copyright © 2017 by ASME

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