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Research Papers: Design and Analysis

Elevated Temperature Shakedown Concepts

[+] Author and Article Information
Charles Becht

 Becht Engineering Co., Inc., Liberty Corner, NJ 07960

J. Pressure Vessel Technol 133(5), 051203 (Jul 14, 2011) (5 pages) doi:10.1115/1.4003456 History: Received May 01, 2009; Revised December 18, 2010; Published July 14, 2011; Online July 14, 2011

This paper is the first part of a two part paper. It describes the concepts of shakedown at elevated temperatures that form the foundation for proposed rules described in the second paper for extension of fatigue design rules in Section VIII, Division 2, Part 5 slightly into the creep range. These proposed rules use shakedown concepts and a cycle limit as a basis for exemption from fatigue analysis.

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Copyright © 2011 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Stress-strain behavior illustrating shakedown

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Figure 2

Stress elevated-strain behavior illustrating temperature shakedown

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Figure 3

Cyclic stress history with shakedown

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Figure 4

Cyclic stress history without shakedown

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Figure 5

Stress-strain behavior with reset to allowable stress

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Figure 6

Cyclic stress history with reset to allowable stress

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Figure 7

Stress-strain behavior with stress reset caused by relaxation at second operating condition

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Figure 8

Stress-time behavior with stress reset caused by relaxation at second operating condition

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