PSI - Issue 28

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.com ScienceDirect

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Procedia Structural Integrity 28 (2020) 1378–1391

© 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo Click here and insert your abstract text. © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo Keywords: coupled thermomeachanical loading; constitutive equations; highly loaded structures; thermonuclear engineering 1. Introduction In the historical retrospective the development of basic and applied research in the field of mechanics of deformable solids was focused on a step by step study of the governing dependencies describing increasingly complex processes of deformation, damage accumulation and fracture. Advanced basic and applied study of the problems of deformation and fracture of materials in connection with the achievement of coupled thermo mechanical limit states requires special formulation aimed at assessment of various combined regimes of both results of studies of e probl ms of deformation, damage accumulation and fracture under extrem coupled thermom chanical loading conditions that re elevant for highly loaded machines and structur employed in nuclear and thermonuclear power engineering as well as in aircraft, rocket and space engineering industries are described Click here and insert your abstract text. © 2020 The Authors. Published by ELSEVIER B.V. This is an ope acces article under CC BY-NC-ND license (ht ps:// r ativecommons.org/licenses/by-nc-nd/4.0) P er-review nder r sp nsibility of the European Structur l I tegrity S ci ty (ESIS) ExCo Keywords: coupled thermomeachanical loading; constitutive equations; highly loaded structures; thermonuclear engineering 1. Introduction In the historical retrospective the development of basic and applied res arch i the field of mechanics of deformable solids was focused on a step by step study of the governing dependencies describing increasingly complex processes of deformation, damage accumulation and fracture. Advanced basic a d applied study of the problems of deformation and fracture of aterials in connection with the chievement of coupled thermo mechanical limit states requires special formulation aimed at assessment of various combined regimes of both 1st Virtual European Conference on Fracture Assessment and accounting for extreme impacts for validation of strength and service life of highly loaded machines and structures NikolayA. Makhutov a , Mikhail. M. Gadenin a , Dmitry O.Reznikov a * a Mechanical Engineering Research Institute, 4 Maly Kharitonievsky lane, Moscow, 101990, Russia Abstract The paper presents four groups of problems that are critical for assessment and validation of strength and service life of technical systems operating under extreme loading conditions: (1) developing constitutive equations valid in wide ranges of strains, strain rates and temperatures; (2) analysis of the kinetics of local states of stresses and strains in notch zones for elastic, limited elastoplastic and severe plastic strains; (3) justified selection of the criterion of ultimate damage and fracture; (4) assessment of the local stresses and strains at the crack tip according to the formulation of the nonlinear fracture mechanics. The results of studies of the problems of deformation, damage accumulation and fracture under extreme coupled thermomeachanical loading conditions that are relevant for highly loaded machines and structures employed in nuclear and thermonuclear power engineering as well as in aircraft, rocket and space engineering industries are described 1st Virtual European Conference on Fracture Assessment and accounting for extreme impacts for validation of strength and service life of highly loaded machines and structures NikolayA. Makhutov a , Mikhail. M. Gadenin a , Dmitry O.Reznikov a * a Mechanical Engineering Research Institute, 4 Maly Kharitonievsky lane, Moscow, 101990, Russia Abstract The paper rese ts four groups of problems that are critical for assessment and validation f trength and service life tech ical systems operating under extreme loading conditions: (1) developing constitutive equat ons valid in wide range of strains, str in rates and temperatures; (2) an ly is of the kinetics of l cal states of stresses and strains in notch zones for elastic, limited lastoplastic nd sev re plastic trains; (3) justified selection of the criterion of ultimate damage and fracture; (4) as essment of the local st ess s and strains at the cr ck tip ording t the fo mulation of the nonlinear fracture mechanics. The

* Corresponding author. Tel.:+7 495 623 5835; fax:+7 495 623 58 35 E-mail address: mibsts@mail.ru * Correspon ing author. Tel.:+7 495 623 5835; fax:+7 495 623 58 35 E-mail address: mibsts@mail.ru

2452-3216 © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo 2452-3216 © 2020 The Authors. Published by ELSEVIER B.V. This is an ope acces article under CC BY-NC-ND license (ht ps:// r ativecommons. rg/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo

2452-3216 © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo 10.1016/j.prostr.2020.10.109