Motivated by the response of industrial piping under seismic loading conditions, the present study examines the behavior of steel process piping elbows, subjected to strong cyclic loading conditions. A set of experiments is conducted on elbow specimens subjected to constant amplitude in-plane cyclic bending, resulting into failure in the low-cycle-fatigue range. The experimental results are used to develop a low-cycle-fatigue curve within the strain-based fatigue design framework. The experimental work is supported by finite element analyses, which account for geometrical and material nonlinearities. Using advanced plasticity models to describe the behavior of elbow material, the analysis focuses on localized deformations at the critical positions where cracking occurs. Finally, the relevant provisions of design codes (ASME B31.3 and EN 13480) for elbow design are discussed and assessed, with respect to the experimental and numerical findings.
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February 2013
Research-Article
Pipe Elbows Under Strong Cyclic Loading Available to Purchase
George E. Varelis,
Spyros A. Karamanos,
Spyros A. Karamanos
e-mail: [email protected]
Department of Mechanical Engineering,
Department of Mechanical Engineering,
University of Thessaly
,Volos, 38334
, Greece
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Arnold M. Gresnigt
Arnold M. Gresnigt
Department of Civil Engineering and Geosciences,
2628 CN Delft,
e-mail: [email protected]
Delft University of Technology
,2628 CN Delft,
The Netherlands
e-mail: [email protected]
Search for other works by this author on:
George E. Varelis
e-mail: [email protected]
Spyros A. Karamanos
e-mail: [email protected]
Department of Mechanical Engineering,
Department of Mechanical Engineering,
University of Thessaly
,Volos, 38334
, Greece
Arnold M. Gresnigt
Department of Civil Engineering and Geosciences,
2628 CN Delft,
e-mail: [email protected]
Delft University of Technology
,2628 CN Delft,
The Netherlands
e-mail: [email protected]
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received January 11, 2012; final manuscript received May 17, 2012; published online December 17, 2012. Assoc. Editor: Haofeng Chen.
J. Pressure Vessel Technol. Feb 2013, 135(1): 011207 (9 pages)
Published Online: December 17, 2012
Article history
Received:
January 11, 2012
Revision Received:
May 17, 2012
Citation
Varelis, G. E., Karamanos, S. A., and Gresnigt, A. M. (December 17, 2012). "Pipe Elbows Under Strong Cyclic Loading." ASME. J. Pressure Vessel Technol. February 2013; 135(1): 011207. https://doi.org/10.1115/1.4007293
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