FEM stress analysis and sealing performance evaluation in bolted flange connections with metal flat gasket subjected to bending moment and internal pressure

Koji Kondo, Yuya Omiya, Shota Tsubaki, Toshiyuki Sawa

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

2 Citations (Scopus)

Abstract

Bolted flange connections with metal gasket have been used at higher pressure under higher temperature condition. Assembly procedures and tightening methods the connections including some types of metal gasket is empirically. Generally, it is known that the bolt preload which is required for satisfying an indicated leak rate in the connections including the metal gasket is not higher than that of the connections including sheet gaskets and spiral wound gaskets. However, no research for the evaluating the sealing performance in the bolted flange connections with metal gaskets has been conducted. In this paper, the leakage tests for the bolted flange connections with the metal flat gasket were conducted in the case where the maximum internal pressure of 7MPa and a bending moment are applied, where the leak rate is measured using the pressure drop method. Then, the sealing performance of the connections with the metal flat gasket was evaluated. In addition, using the FEM stress calculations, the flange stress distributions between the flange surface and the gasket were examined as the evaluation. As the result, it is found that the stress distribution at the contact surfaces between the metal flat gasket and the flange surface under the bending moment and the internal pressure. In the leakage tests, it was observed that the amount of the leakage (He gas) depends on the stress distributions and the plastic deformation of the gasket.

Original languageEnglish
Title of host publicationComputer Technology and Bolted Joints
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791845998
DOIs
Publication statusPublished - Jan 1 2014
Externally publishedYes
EventASME 2014 Pressure Vessels and Piping Conference, PVP 2014 - Anaheim, United States
Duration: Jul 20 2014Jul 24 2014

Publication series

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

Other

OtherASME 2014 Pressure Vessels and Piping Conference, PVP 2014
CountryUnited States
CityAnaheim
Period7/20/147/24/14

ASJC Scopus subject areas

  • Mechanical Engineering

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    Kondo, K., Omiya, Y., Tsubaki, S., & Sawa, T. (2014). FEM stress analysis and sealing performance evaluation in bolted flange connections with metal flat gasket subjected to bending moment and internal pressure. In Computer Technology and Bolted Joints (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 2). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/PVP2014-28731