PSI - Issue 28

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

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 28 (2020) 1160–1166

© 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 Abstract The Theory of Critical Distances is a group of phenomenological methods for fracture prediction of materials subjected different loading conditions with accounting effect of stress concentration features. When estimating strength of components under dynamic loading by directly postprocessing the elastoplastic stress fields acting on the material in the notch tip the critical distance is a material parameter. Based on research of physical processes taking place at a micro/mesoscopic level near the notch tip the physical meaning of the parameters of theory of critical distances was investigated. The modeling of solids with defects behavior based on self-similar solutions for stress and defect density fields in one- and three-dimensional cases was carried out. Established link between critical distance and fundamental length of dissipative structure growing in a blow-up regime. © 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: Theory of Critical Distances; Fracture; Notched materials; Fundamental length; Dissipative structure 1. Introduction The Theory of Critical Distances (TCD) is the group of phenomenological methods for fracture prediction of different classes of materials subjected to fatigue (Susmel (2008), Wang et al. (2017), Ibanez-Gutierrez et al (2017)), static (Taylor (2006), Susmel et al. (2010)) and dynamic (Yin et al (2015)) loading with accounting effect of geometrical discontinuities (cracks, notches, holes). The TCD take into account a characteristic length of the process zone (i.e. critical distance) and inherent material strength in the assessment of the effective stress (Taylor (2007)). 1st Virtual European Conference on Fracture The introduction of critical distance in the description of dynamic experiments based on simulation mesodefect evolution Vedernikova Alena*, Kostina Anastasiia, Plekhov Oleg ICMM UrB RAS, Academika Koroleva st, 1, Perm 614013, Russia Abstract The Theory of Critical Distances is a group of phenomenological methods for fracture prediction of materials subjected different loading conditions with accounting effect of stress c nc tration features. When estimating strength of components under ynamic by rectly postprocess th elastopla tic str ss fields acting on the material in th notch tip the critical istance is a m terial param ter. Ba ed n researc of physic l proces es taking place at a micro/mesoscopic level near t notch tip the phys cal ean ng of the pa amet rs of th o y of critical distan was investigated. The m deling f solids with def cts behavior based on self-s milar solutions for tress and defec dens ty fields in o e- and three-di ensio al ca es was carri d out. Established link b tween critical distance and fundamental length of dissipative structure grow ng i a blow-up regime. © 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 u der re ponsibility of European Structural Integri y Society (ESIS) ExC K ywords: Theory of Critical Distances; Fract e; Notched materials; Fundamental length; Dissipative structure 1. Introduction The Theory of Critical Distances (TCD) is the group of phenomenological methods for fracture prediction of differ nt classes of materials subjected to fatigue (Susmel (2008), Wang et al. (2017), Ibanez-Gutierrez et al (2017)), static (Taylor (2006), Susmel et al. (2010)) and dynamic (Yin et al (2015)) loading with accounting effect of geometrica discontinuitie (cracks, notches, holes). The TCD take into account a characteristic length of th process zone (i.e. critical distanc ) and inherent material strength in the assessment of the effective str ss (Taylor (2007)). 1st Virtual European Conference on Fracture The introduction of critical distance in the description of dynamic experiments based on simulation mesodefect evolution Vedernikova Alena*, Kostina Anastasiia, Plekhov Oleg ICMM UrB RAS, Academika Koroleva st, 1, Perm 614013, Russia

* Corresponding author. Tel.: +7-342-237-83-17. E-mail address: terekhina.a@icmm.ru * Corresponding author. Tel.: +7-342-237-83-17. E-mail ad ress: terekhina.a@icmm.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 open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review u der re ponsibility of European Structural Integri y So i ty (ESIS) ExC

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.2020.11.097