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Research Papers: Design and Analysis

On the Use of Theory of Rings on Nonlinear Elastic Foundation to Study the Effect of Bolt Spacing in Bolted Flange Joints

[+] Author and Article Information
Tan Dan Do

e-mail: tandan_do@yahoo.com

Abdel-Hakim Bouzid

ASME Fellow
e-mail: hakim.bouzid@etsmtl.ca

Thien-My Dao

Professor
e-mail: thien-my.dao@etsmtl.ca
Ecole de Technologie Superieure, Mechanical Engineering Department,
1100, rue Notre-Dame Ouest,
Montreal, QC, H3C 1K3, Canada

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received December 1, 2010; final manuscript received April 10, 2012; published online October 18, 2012. Assoc. Editor: William J. Koves.

J. Pressure Vessel Technol 134(6), 061203 (Oct 18, 2012) (8 pages) doi:10.1115/1.4007030 History: Received December 01, 2010; Revised April 10, 2012

Bolted flange joints are extensively used to connect pressure vessels and piping equipment together. They are simple structures that offer the possibility of disassembly. However, they often experience leakage problems due to a loss of tightness as a result of a nonuniform distribution of gasket contact stresses in the radial and circumferential direction. Many factors contribute to such a failure; the flange and gasket stiffness and bolt spacing design combination being one of them. In our recent paper, the effects of bolt spacing were investigated based on the theory of circular beams resting on a linear elastic foundation (Do, T. D., Bouzid, A. H., and Dao, T.-M., 2011, “Effect of Bolt Spacing on the Circumferential Distribution of Gasket Contact Stress in Bolted Flange Joints,” ASME J. Pressure Vessel Technol., 133 (4), 041205). This paper is an extension of the work in which an analytical solution based on the real nonlinear gasket behavior is developed. This study focuses on the distribution of the gasket contact stress of two large diameter flanges, namely, a 52 in. and a 120 in. heat exchanger (HE) flanges. The nonlinear gasket behavior solution is compared to the Finite Element Analysis (FEA) and the linear gasket behavior solution for evaluation and comparison.

Copyright © 2012 by ASME
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References

Figures

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Fig. 5

FEA Gasket displacement variations of 52 in. HE flange, 32 bolts

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Fig. 7

Gasket displacement variations of 52 in. HE flange, tF = 142.9 mm

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Fig. 8

Gasket displacement variations of 52 in. HE flange, 60 bolts

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Fig. 9

Gasket displacement variations of 120 in. HE flange, tF = 74.6 mm

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Fig. 10

Gasket displacement variations of 120 in. HE flange, tF = 165.1 mm

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Fig. 11

Gasket displacement variations of 120 in. HE flange, 68 bolts

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Fig. 3

CMS gasket load compression test

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Fig. 17

Contact stress variations of 120 in. HE flange, tF = 74.6 mm, 56 bolts

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Fig. 18

Contact stress variations of 120 in. HE flange, tF = 165.1 mm

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Fig. 19

Contact stress variations of 120 in. HE flange, 56 bolts

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Fig. 20

Contact stress variations of 120 in. HE flange, 68 bolts

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Fig. 21

maximum contact stress variations vs flange thickness of 52 in. HE flange

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Fig. 22

Maximum contact stress variations vs flange thickness of 120 in. HE flange

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Fig. 2

Infinitesimal element model of flange

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Fig. 1

Bolted flange joint

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Fig. 6

Gasket displacement variations of 52 in. HE flange, tF = 88.9 mm

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Fig. 12

Gasket displacement variations of 120 in. HE flange, 84 bolts

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Fig. 13

Contact stress variations of 52 in. HE flange, 32 bolts, tF = 88.9 mm

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Fig. 14

Contact stress variations of 52 in. HE flange, tF = 50.8 mm

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Fig. 15

Contact stress variations of 52 in. HE flange, tF = 142.9 mm

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Fig. 16

Contact stress variations of 52 in. HE flange, 32 bolts

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