Advanced Technologies and Materials

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Vol. 48 No. 2 (2023)
Original articles

Numerical Determination of the Life of Steel Exposed To Low Cycle Fatigue

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  • Vujadin Aleksić,
  • Srđan Bulatović,
  • Bojana Zečević,
  • Ana Maksimović,
  • Ljubica Milović
Vujadin Aleksić
Institute for testing of materials-IMS Institute, Bulevar vojvode Mišića 43, 11000 Belgrade, Serbia
Srđan Bulatović
Institute for testing of materials-IMS Institute, Bulevar vojvode Mišića 43, 11000 Belgrade, Serbia
Bojana Zečević
Innovation Centre of the Faculty of Technology and Metallurgy, Karnegijeva 4, 11120 Belgrade, Serbia
Ana Maksimović
Innovation Centre of the Faculty of Technology and Metallurgy, Karnegijeva 4, 11120 Belgrade, Serbia
Ljubica Milović
University of Belgrade, Faculty of Technology and Metallurgy, Karnegijeva 4, 11120 Belgrade, Serbia
DOI: https://doi.org/10.24867/ATM-2023-2-005

Published 2023-12-18

abstract views: 148 // Full text article (PDF): 78


Keywords

  • Steel,
  • LFC,
  • Lifetime,
  • Numerical methods

How to Cite

Aleksić, V., Bulatović, S., Zečević, B., Maksimović, A., & Milović, L. (2023). Numerical Determination of the Life of Steel Exposed To Low Cycle Fatigue. Advanced Technologies and Materials, 48(2), 69–76. https://doi.org/10.24867/ATM-2023-2-005
Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

In the paper, based on the results of the experimental research of high-strength low-alloy steel(HSLA), Nionicral 70 (NN-70), under conditions of low-cycle fatigue (LCF), a numerical analysis of stress and determination of the life of steel samples was performed. Experimental testing of the behavior of the samples were performed with controlled and fully reversible strain (Δε/2 = const, Rε = εmin/εmax = -1), according to the standard ISO 12106:2003 (E). For computational analyses, the following were used: the method of least squares and the method of finite elements (FEM). On the basis of the analysis of the results of the stress-deformation state and the determination of the life span through the isolines of the life span and comparison with the results of experimental tests, a graphic representation is given. The analysis justified the effort to numerically solve the estimation of the lifespan of steel under low cycle fatigue (LCF).

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