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Low Cycle Fatigue Tests and Simulations on Steel Elbows

[+] Author Affiliations
Patricia Pappa, George E. Varelis, Spyros A. Karamanos

University of Thessaly, Volos, Greece

Arnold M. Gresnigt

Delft University of Technology, Berkel en Rodenrijs, Netherlands

Paper No. PVP2013-97903, pp. V008T08A021; 10 pages
doi:10.1115/PVP2013-97903
From:
  • ASME 2013 Pressure Vessels and Piping Conference
  • Volume 8: Seismic Engineering
  • Paris, France, July 14–18, 2013
  • Conference Sponsors: Pressure Vessels and Piping Division, Nondestructive Evaluation Engineering Division
  • ISBN: 978-0-7918-5574-4
  • Copyright © 2013 by ASME

abstract

In this paper the low cycle fatigue behaviour of steel elbows under strong cyclic loading conditions (in-plane and out-of-plane) is examined. The investigation is conducted through advanced finite element analysis tools, supported by real-scale test data for in-plane bending. The numerical results are successfully compared with the experimental measurements. In addition, a parametric study is conducted, which is aimed at investigating the effects of the diameter-to-thickness ratio on the low-cycle fatigue of elbows, focusing on the stress and strain variations. Strain gauge measurements are compared with finite element models. Upon calculation of local strain variation at the critical location, the number of cycles to fracture can be estimated.

Copyright © 2013 by ASME

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