Fem stress analysis and the sealing performance evaluation of bolted flanged connections with metal flat gaskets

Koji Kondo, Shota Tsubaki, Toshiyuki Sawa, Yuya Omiya, Koji Sato

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

1 Citation (Scopus)

Abstract

Metal gaskets have been used in bolted flanged connections under higher pressure and higher temperature conditions. However, it is difficult to estimate the sealing performance of the metal contact interfaces in the connections. Thus, it is necessary to study on the sealing characteristics of the metal to metal contact gasket in the connections under higher internal pressure and higher temperature. In this study, firstly, the sealing behavior test taking into account load history is carried out in detail using metal flat gaskets according to JIS B2490. Secondly, to examine the effect of the gasket contact area and surface roughness of metal gasket on the sealing behavior of metal-metal contact, the sealing behavior test is carried out using metal flat gaskets which has several types of gasket width and surface roughness. Thirdly, the amount of leakage is measured for bolted flanged connections with metal flat gaskets. The relationship between the gasket contact stress and the leak rate is obtained. Furthermore, the contact gasket stress distributions in the connection are analyzed using FEM stress analysis. Using the obtained gasket stress distribution, the sealing performance is estimated taking into account the gasket contact area and surface roughness of the metal flat gasket. The estimated result is compared with the measured results. In the results, the effect of the yield stress and the plastic deformation of the gasket surface are found to be important on the sealing mechanism.

Original languageEnglish
Title of host publicationASME 2013 Pressure Vessels and Piping Conference, PVP 2013
DOIs
Publication statusPublished - Dec 1 2013
Externally publishedYes
EventASME 2013 Pressure Vessels and Piping Conference, PVP 2013 - Paris, France
Duration: Jul 14 2013Jul 18 2013

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume2
ISSN (Print)0277-027X

Other

OtherASME 2013 Pressure Vessels and Piping Conference, PVP 2013
CountryFrance
CityParis
Period7/14/137/18/13

ASJC Scopus subject areas

  • Mechanical Engineering

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