0
Research Papers: Design and Analysis

Numerical and Experimental Study of Elastic Interaction in Bolted Flange Joints

[+] Author and Article Information
Linbo Zhu

State Key Laboratory for Manufacturing
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: chdyuhan@stu.xjtu.edu.cn

Abdel-Hakim Bouzid

Professor
Fellow ASME
Department of Mechanical Engineering,
Ecole de Technologie Superieure,
1100 Notre-Dame Ouest,
Montreal, QC H3C 1K3, Canada
e-mail: hakim.bouzid@etsmtl.ca

Jun Hong

State Key Laboratory for Manufacturing
Systems Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: jhong@mail.xjtu.edu.cn

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received May 17, 2016; final manuscript received November 4, 2016; published online January 11, 2017. Assoc. Editor: Reza Adibiasl.

J. Pressure Vessel Technol 139(2), 021211 (Jan 11, 2017) (7 pages) Paper No: PVT-16-1079; doi: 10.1115/1.4035316 History: Received May 17, 2016; Revised November 04, 2016

Bolted flange joints are widely used to connect pressure vessels and piping equipment together and facilitate their disassembly. Initial tightening of their bolts is a delicate operation because it is extremely difficult to achieve the target load and uniformity due to elastic interaction. The risk of failure due to leakage and fatigue under service loading is consequently increased. This paper presents a study on the effect of elastic interaction that is present during the tightening of bolted flange joints using three-dimensional nonlinear finite-element modeling and experimentation. The nonlinear nonelastic behavior of the gasket is taken into account in the numerical simulation. The scatter in bolt preload produced during the tightening sequence is evaluated. Based on the elastic interaction coefficient method, the initial target tightening load in each bolt for every pass is determined by using the nonlinear finite-element model to obtain a uniform preload after the final tightening pass. The validity of the finite-element analysis (FEA) is supported by experimental tests conducted on a NPS 4 class 900 weld neck bolted flange joints using fiber and flexible graphite gaskets. This study provides guidance and enhances the safety and reliability of bolted flange joints by minimizing bolt load scatter due to elastic interaction.

FIGURES IN THIS ARTICLE
<>
Copyright © 2017 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

Mechanical behavior of fiber and flexible graphite sheet gasket materials

Grahic Jump Location
Fig. 2

Finite-element model of flange connection

Grahic Jump Location
Fig. 3

Bolt numbering of flange connection

Grahic Jump Location
Fig. 4

Experimental bolted joint setup

Grahic Jump Location
Fig. 5

Comparison of flange rotations with fiber gasket

Grahic Jump Location
Fig. 6

Bolt tension variations during the three passes with fiber sheet gasket: (a) bolts 1, 3, 5, and 7 and (b) bolts 2, 4, 6, and 8

Grahic Jump Location
Fig. 7

Bolt tension variations during the three passes with flexible graphite gasket: (a) bolts 1, 3, 5, and 7 and (b) bolts 2, 4, 6, and 8

Grahic Jump Location
Fig. 8

Flange displacement variations during the three passes with fiber sheet gasket: (a) bolts 1, 3, 5, and 7 and (b) bolts 2, 4, 6, and 8

Grahic Jump Location
Fig. 9

Flange displacement variations during the three passes with flexible graphite gasket: (a) bolts 1, 3, 5, and 7 and (b) bolts 2, 4, 6, and 8

Grahic Jump Location
Fig. 10

Bolt tension variations after the final tightening pass with fiber sheet gasket

Grahic Jump Location
Fig. 11

Bolt tension variations after the final tightening pass with flexible graphite gasket

Grahic Jump Location
Fig. 12

Flange displacement variations after the final tightening pass

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