0
Research Papers: Design and Analysis

Analytical Modeling of Flat Face Flanges With Metal-to-Metal Contact Beyond the Bolt Circle

[+] Author and Article Information
Hichem Galai

Department of Mechanical Engineering, Ecole de Technologie Superieure, 1100 Rue Notre-Dame Ouest, Montreal, QC, H3C 1K3, Canadahichem.galai.1@ens.etsmtl.ca

Abdel-Hakim Bouzid

Department of Mechanical Engineering, Ecole de Technologie Superieure, 1100 Rue Notre-Dame Ouest, Montreal, QC, H3C 1K3, Canadahakim.bouzid@etsmtl.ca

J. Pressure Vessel Technol 132(6), 061207 (Oct 19, 2010) (8 pages) doi:10.1115/1.4001655 History: Received August 17, 2009; Revised November 26, 2009; Published October 19, 2010; Online October 19, 2010

Design rules for flat face flanges with metal-to-metal contact beyond the bolt circle are covered by Appendix Y of the American Society of Mechanical Engineers Code. These design rules are based on Schneider’s work (1968, “Flat Faces Flanges With Metal-to-Metal Contact Beyond the Bolt Circle,” ASME J. Eng. Power, 90(1), pp. 82–88). The prediction of tightness of these bolted joints relies very much on the level of precision of the self-sealing gasket compression during operation. The evaluation of this compression requires a rigorous flexibility analysis of the joint including bolt-flange elastic interaction. This paper analyses flange separation and the bolt load change in flat face bolted joints. It proposes two different analytical approaches capable of predicting flange rotation and bolt load change during operation. The first method is based on the beam theory applied to a continuous flange sector. This approach is an improvement of the discrete beam theory used in the Schneider model. The second method is based on the circular plate theory and is developed for the purpose of a more accurate assessment of the load changes. As in the Taylor Forge method, this approach is, in general, better suited than the beam theory for flat face flanges, in particular when the flange width is small. The proposed models are compared with the discrete beam theory and validated using numerical finite element analysis on different flange sizes.

FIGURES IN THIS ARTICLE
<>
Copyright © 2010 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Flange analytical model

Grahic Jump Location
Figure 2

Free body diagram of the continuous beam

Grahic Jump Location
Figure 3

Clamped circular plate subjected to (a) ring load and (b) bending moment at ro

Grahic Jump Location
Figure 4

3D finite element model

Grahic Jump Location
Figure 5

Contact force variation with pressure

Grahic Jump Location
Figure 6

Variation in the contact force position with pressure

Grahic Jump Location
Figure 7

Rotation variation at the flange ID with pressure

Grahic Jump Location
Figure 8

Comparison of the flange separation at the bore with the three models

Grahic Jump Location
Figure 9

Contact stress and separation in 10-in. flange

Grahic Jump Location
Figure 10

Contact stress and separation in 24-in. flange

Grahic Jump Location
Figure 11

Bolt load increase with pressure

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In