FEM stress analysis and sealing performance evaluation in pipe flange connections with spiral wound gaskets subjected to external bending moments: Case where internal fluid is liquid

Toshiyuki Sawa, Takeshi Iwamoto, Kensuke Funada, Yuya Omiya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

The leakage evaluation when gas is used is more severe than that when liquid is used in pipe flange connections. In a practical design, it is also necessary to examine the leakage in the connections under liquid internal pressure application. The contact gasket stress distribution in the connection with a spiral wound gasket subjected to internal pressure and bending moments were analyzed using elasto-plastic (EP) finite element method (FEM) taking account hysteresis and nonlinearity in the stress-strain curve of the gasket. The effects of initial clamping bolt force (bolt preload), the nominal pressure and the nominal diameter of pipe flange and the equivalent pressure when the leakage occurs on the contact gasket stress distributions were examined. The leakage tests for the connections under the bending moments and the internal pressure were also conducted by using liquid (water). By using the results of the leakage tests and the calculated contact gasket stress distributions, the sealing performance of the connections was evaluated. It was found that the sealing performance of the connection can be estimated when liquid (water) was used, that is, when the contact gasket stress becomes zero, the leakage occurs. In addition, a method for determining the bolt preload in the connections under the bending moments was proposed for the reliable design.

Original languageEnglish
Title of host publicationASME 2008 Pressure Vessels and Piping Conference, PVP2008
Pages763-769
Number of pages7
DOIs
Publication statusPublished - Dec 1 2008
Externally publishedYes
EventASME 2008 Pressure Vessels and Piping Conference, PVP2008 - Chicago, IL, United States
Duration: Jul 27 2008Jul 31 2008

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume3
ISSN (Print)0277-027X

Other

OtherASME 2008 Pressure Vessels and Piping Conference, PVP2008
CountryUnited States
CityChicago, IL
Period7/27/087/31/08

ASJC Scopus subject areas

  • Mechanical Engineering

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  • Cite this

    Sawa, T., Iwamoto, T., Funada, K., & Omiya, Y. (2008). FEM stress analysis and sealing performance evaluation in pipe flange connections with spiral wound gaskets subjected to external bending moments: Case where internal fluid is liquid. In ASME 2008 Pressure Vessels and Piping Conference, PVP2008 (pp. 763-769). (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 3). https://doi.org/10.1115/PVP2008-61168