Issue 51

A. A. Lakhdari et alii, Frattura ed Integrità Strutturale, 51 (2020) 236-253; DOI: 10.3221/IGF-ESIS.51.19 236 Finite Element Modeling of the behavior of a hollow cylinder in a hydrogen-containing environment A. A. Lakhdari Université des Sciences et de la Technologie d'Oran Mohamed Boudiaf, Algeria amina.lakhdari@univ-usto.dz , https://orcid.org/0000-0003-0627-0194 S.A. Bubnov Ryazan State Radio Engineering University, Russia serbubnov@inbox.ru , https://orcid.org/0000-0002-0274-8341 A. Seddak Université des Sciences et de la Technologie d'Oran Mohamed Boudiaf, Algeria sed_dz@yahoo.fr , https://orcid.org/0000-0003-4539-8350 I. I. Ovchinnikov, I. G. Ovchinnikov Saratov State Technical University Gagarin Y.A., Russia bridgeart@mail.ru , http://orcid.org/0000-0001-8370-297X bridgesar@mail.ru , https://ordic.org/0000-0003-0617-3132 A BSTRACT . The two main research orientations on the problem of hydrogen embrittlement are examined: the study of fundamental principles and the disclosure of micromechanisms and the relation between hydrogen embrittlement and metal aging; the development of models and methods for predicting the kinetics of change in stress-strain state and for evaluating the longevity of structures subjected to hydrogen embrittlement. The state of the problem of hydrogen embrittlement of metals in the first direction is briefly analyzed. More attention is paid to the importance of predicting the behavior of charged metal structures under the influence of hydrogen embrittlement. We then examine the use of finite element modeling using the ANSYS software to compute the calculation analysis of a hollow cylinder subjected to internal and external pressures and hydrogen embrittlement. The cylinder material is nonlinear elastic and its properties depend on the hydrogen concentration at each point of the cylinder. Consideration is given to the influence of the rigidity of the stress state and the hydrogen concentration on the diffusion kinetics of hydrogen in the cylinder body. The problem is solved in time steps. The distributions of the hydrogen concentration and the stresses for a quarter of the volume of the cylinder are given, as well as the Citation: A. A. Lakhdari, S.A. Bubnov, A. Seddak, I. I. Ovchinnikov, I. G. Ovchinnikov, Finite Element Modeling of the behavior of a hollow cylinder in a hydrogen-containing environment, Frattura ed Integrità Strutturale, 51 (2020) 236-253. Received: 06.10.2019 Accepted: 26.11.2019 Published: 01.01.2020 Copyright: © 2020 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.