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TECHNICAL PAPERS

Closed-Form Collapse Moment Equations of Elbows Under Combined Internal Pressure and In-Plane Bending Moment

[+] Author and Article Information
J. Chattopadhyay

Reactor Safety Division, Hall-7, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, Maharastra, Indiae-mail: jchatt@apsara.barc.ernet.in

D. K. Nathani

Reactor Engineering Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, Maharastra, India

B. K. Dutta, H. S. Kushwaha

Reactor Safety Division, Hall-7, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, Maharastra, India

J. Pressure Vessel Technol 122(4), 431-436 (Mar 07, 2000) (6 pages) doi:10.1115/1.1285988 History: Received August 03, 1999; Revised March 07, 2000
Copyright © 2000 by ASME
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References

Figures

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Closing moment versus end rotation curves for elbow of 20 mm thickness subjected to different internal pressure
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Normalized closing collapse moments for various normalized internal pressures and elbow factors (symbols show the FE results and solid lines show predictions of closed-form Eq. (9))
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The typical finite element mesh of an elbow
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Comparison of moment-end rotation curves between pure closing and opening mode of bending moment for elbow factors of 0.24 and 0.6
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Normalized opening collapse moments for various normalized internal pressures and elbow factors (symbols show FE results and solid lines show predictions of closed-form Eq. (10))
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Variation of normalized collapse moment with elbow factor for different degree of internal pressure for closing case
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Effect of internal pressure on limit moments—a comparison

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