A Numerical Study of the Damage Mechanisms for CT Tensile Specimens of P265GH Steel Material

Authors

  • Mohammed Lahlou
    Affiliation
    Sciences for Energy Laboratory LabSIPE, ENSAJ, Chouaib Doukkali University, 24000 El Jadida, P.O.B. 1166, Morocco
  • Abderrazak En-Naji
    Affiliation
    Laboratory M3ER, Department of Physics, Faculty of Sciences and Technology, Moulay Ismail University, 52003 Errachidia, P.O.B. 509, Morocco
  • Nadia Mouhib
    Affiliation
    Laboratory of Mechanics, Higher Institute of Maritime Studies, Km 7 Road El Jadida, 20190 Casablanca, Morocco
  • Bouchra Saadouki
    Affiliation
    Laboratory of Control and Mechanical Characterization of Materials and Structures, National Higher School of Electricity and Mechanics, Hassan II University, 20190 Casablanca, P.O.B. 8118, Morocco
  • Fatima Majid
    Affiliation
    Laboratory of Nuclear, Atomic, Molecular, Mechanical and Energetic Physics, University Chouaib Doukkali, 24000 El Jadida, P.O.B. 20, Morocco
https://doi.org/10.3311/PPme.20234

Abstract

The aim of this paper is to determine the damage mechanisms of P265GH steel, commonly used for pressure equipment. First, an experimental study using tensile and Charpy tests allowed us to determine the mechanical properties (Young modulus E = 200 GPa, elongation ε = 35%, yield se = 320 MPa, ultimate stress su = 470 MPa, and KIC = 96 MP√m). Then, numerical finite element modeling on a CT specimen using the CASTEM calculation code allowed us to determine the damage of the material when the notch depth varies. The analysis of the results shows that the numerical values of the stress concentration coefficient Kt and the stress intensity factor KI are comparable with the analytically calculated values, thus validating our numerical study. The numerical results obtained revealed that the maximum stress σmax is located in the vicinity of the notch bottom and the high probability density corresponds to a high loading level.

Keywords:

pressure vessels, finite element model, stress concentration coefficient, notch, stress intensity factor

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Published Online

2023-04-18

How to Cite

Lahlou, M., En-Naji, A., Mouhib, N., Saadouki, B., Majid, F. “A Numerical Study of the Damage Mechanisms for CT Tensile Specimens of P265GH Steel Material”, Periodica Polytechnica Mechanical Engineering, 67(2), pp. 103–109, 2023. https://doi.org/10.3311/PPme.20234

Issue

Vol. 67 No. 2 (2023)

Section

Articles