Numerical analysis on the effect of hydrostatic pressure on sealing performance of O-ring of underwater glider

  • LIU De-liang ,
  • ZHANG Shi-feng ,
  • WANG Tian-lin ,
  • CAO Shu-hua
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  • (a.Ship and Ocean Engineering College;b. Continuing Educational College, Dalian Maritime University, Dalian 116026, China)

Received date: 2019-01-21

  Revised date: 2019-05-07

  Online published: 2019-05-08

Abstract

Workbench software was used to simulate the effects of hydrostatic pressure on O-ring deformation, Van Mises stress and contact pressure under different compression rates,and the corresponding relations between them were obtained.The calculation results show that the influence of hydrostatic pressure on seal ring deformation decreases with the increase of compression ratio; when compression ratio is small, the increase of hydrostatic pressure will lead to squeezing phenomenon, which makes the Van Mises stress increase sharply with the result of seal ring failure,so when the water depth is large,a larger compression ratio or a retaining ring is necessary;the contact pressure increases with the increase of hydrostatic pressure under different compression ratio,and  the maximum contact pressure is always greater than hydrostatic pressure to ensure its normal sealing performance.  The calculation results can provide a reference for improving the design of underwater glider sealing structure.

Cite this article

LIU De-liang , ZHANG Shi-feng , WANG Tian-lin , CAO Shu-hua . Numerical analysis on the effect of hydrostatic pressure on sealing performance of O-ring of underwater glider[J]. Journal of Dalian Maritime University, 2019 , 45(4) : 26 -34 . DOI: 10.16411/j.cnki.issn1006-7736.2019.04.005

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