Temperature-dependent fatigue characteristics of P91 steel

• Autorzy: Egner Władysław , Sulich Piotr , Mroziński Stanisław , Egner Halina

Identyfikatory

DOI

10.2478/ama-2020-0010

• Języki publikacji: EN

Abstrakty

EN

In this paper, the experimental investigations, constitutive description and numerical modelling of low-cycle fatigue behaviour of P91 steel in non-isothermal conditions are presented. First, experimental tests are performed to recognise different aspects of material behaviour. Then, an appropriate constitutive model is developed within the framework of thermodynamics of irreversible processes with internal state variables. The model describes two phases of cyclic softening, related to plastic mechanisms. An important goal of the presented research is to include thermomechanical coupling in the constitutive modelling. Next, the model parameters are identified based on the available experimental data. Some parametric studies are presented. Finally, numerical simulations are performed, which indicate the significant influence of thermomechanical coupling on the response of the constitutive model in thermomechanical fatigue conditions.

Słowa kluczowe

EN

low-cycle fatigue; thermomechanical coupling; constitutive modelling

• Wydawca: Oficyna Wydawnicza Politechniki Białostockiej
• Czasopismo: Acta Mechanica et Automatica
• Rocznik: 2020
• Tom: Vol. 14, no. 2
• Strony: 69--78
• Opis fizyczny: Bibliogr. 38 poz., rys., tab., wykr.

Twórcy

autor

Egner Władysław

• Institute of Applied Mechanics, Faculty of Mechanical Engineering, Cracow University of Technology, 31-864 Kraków Al. Jana Pawła II 37, Poland

autor

Sulich Piotr

• Huta Stalowa Wola S.A., ul. gen. Tadeusza Kasprzyckiego 8, 37-450 Stalowa Wola, Poland

autor

Mroziński Stanisław

• UTP University of Science and Technology, Faculty of Mechanical Engineering, 85-225 Bydgoszcz ul. Kordeckiego 20, Poland

autor

Egner Halina

• Institute of Applied Mechanics, Faculty of Mechanical Engineering, Cracow University of Technology

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Uwagi

1. This work was supported by the National Science Centre of Poland through the Grant No. 2017/25/B/ST8/02256.

2. Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).