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TECHNICAL PAPERS

An Evaluation of EJMA Stress Calculations for Unreinforced Bellows

[+] Author and Article Information
Charles Becht

Becht Engineering Company, Inc., Liberty Corner, NJ 07938e-mail: chuck@becht.com

J. Pressure Vessel Technol 124(1), 124-129 (Jul 03, 2001) (6 pages) doi:10.1115/1.1426405 History: Received August 16, 2000; Revised July 03, 2001
Copyright © 2002 by ASME
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References

Anderson, W. F., 1964, “Analysis of Stresses in Bellows, Part I: Design Criteria and Test Results,” NAA-SR-4527 (Pt. I), Atomics International Division of North American Aviation.
Anderson, W. F., 1964, “Analysis of Stresses in Bellows, Part II: Mathematical,” NAA-SR-4527 (Pt. II), Atomics International Division of North American Aviation.
Standards of the Expansion Joint Manufacturers Association, Inc., 7th Edition, 1998, White Plains, NY Expansion Joint Manufacturers Association.
Becht, IV, C., and Skopp, G., 1981, “Stress Analysis of Bellows,” Metallic Bellows and Expansion Joints, ASME PVP-Vol. 51, eds., R. I. Jetter et al.
Osweiller, F., 1989, “Design of an Expansion Joint By a Finite Element Program-Comparison with the EJMA Standards,” Metallic Bellows and Expansion Joints—1989, ASME PVP-Vol. 168, eds., C. Becht IV et al., pp. 87–94.

Figures

Grahic Jump Location
Bellows geometry (EJMA, 1993)
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Comparison of calculated Cp versus EJMA chart
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Comparison of calculated Cf versus EJMA chart
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Comparison of calculated Cd versus EJMA chart
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Diameter dependence of EJMA factors
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Thickness dependence of EJMA factors
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S3 (EJMA)/meridional membrane due to pressure (FEA)
Grahic Jump Location
Pressure stress in bellows (QW=0.5, QDT=1.0)
Grahic Jump Location
Pressure stress in bellows (QW=0.5, QDT=2.0)
Grahic Jump Location
Pressure stress in bellows (QW=0.2, QDT=1.0)
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Pressure stress in bellows (QW=0.2, QDT=2.0)
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Calculated Cf at bellows crown versus EJMA chart

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