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TECHNICAL PAPERS

Modeling Studies to Predict Stresses in Composite Floor Tubes of Black Liquor Recovery Boilers

[+] Author and Article Information
Gorti B. Sarma

Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6359

James R. Keiser

Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6156

Xun-Li Wang

Spallation Neutron Source Project, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6474

Robert W. Swindeman

Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6155

J. Eng. Mater. Technol 123(3), 349-354 (Feb 28, 2001) (6 pages) doi:10.1115/1.1372709 History: Received February 01, 2000; Revised February 28, 2001
Copyright © 2001 by ASME
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References

Figures

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Finite element discretization used for analyses of the welding of membrane to tube. The coordinate system is defined as follows: 1—radial in the tube, transverse in the membrane; 2—hoop in the tube, normal in the membrane; 3—axial in both the tube and the membrane.
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(a) Hoop and (b) axial stress distribution [MPa] in the tube and membrane assembly after the welding operation.
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Finite element discretization used for analyses of a normal operating cycle, showing the temperature distribution [°C] on the fireside surface.
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Variation in (a) hoop and (b) axial stress at the fireside crown of the tube for the three clad materials during a normal operating cycle.
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Variation in (a) coefficient of thermal expansion and (b) yield stress with temperature.
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Variation in (a) transverse and (b) axial stress at the fireside surface of a membrane for the three clad materials during a normal operating cycle.
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Variation in hoop and axial stresses on the (a) SS304L side and (b) SA210 side of the interface at the tube crown during a normal operating cycle.
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Variation in transverse and axial stresses on the (a) SS304L side and (b) SA210 side of the interface in the membrane during a normal operating cycle.

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