Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › статья в сборнике материалов конференции › Рецензирование
Scale and size effects in dynamic fracture of concretes and rocks. / Petrov, Y.; Selyutina, N.
DYMAT 2015 - 11th International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading. ред. / Ezio Cadoni. EDP Sciences, 2015. 04005 (EPJ Web of Conferences; Том 94).Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › статья в сборнике материалов конференции › Рецензирование
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TY - GEN
T1 - Scale and size effects in dynamic fracture of concretes and rocks
AU - Petrov, Y.
AU - Selyutina, N.
N1 - Publisher Copyright: © 2015 Owned by the authors, published by EDP Sciences. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.
PY - 2015/9/7
Y1 - 2015/9/7
N2 - Structuraloral approach based on the notion of incubation time is used for interpretation of strain-rate effects in the fracture process of concretes and rocks. It is established that temporal dependences of concretes and rocks are calculated by the incubation time criterion. Experimentally observed different relations between ultimate stresses of concrete and mortar in static and dynamic conditions are explained. It is obtained that compressive strength of mortar at a low strain rate is greater than that of concrete, but at a high strain rate the opposite is true. Influence of confinement pressure on the mechanism of dynamic strength for concretes and rocks is discussed. Both size effect and scale effect for concrete and rocks samples subjected to impact loading are analyzed. Statistical nature of a size effect contrasts to a scale effect that is related to the definition of a spatiooral representative volume determining the fracture event on the given scale level.
AB - Structuraloral approach based on the notion of incubation time is used for interpretation of strain-rate effects in the fracture process of concretes and rocks. It is established that temporal dependences of concretes and rocks are calculated by the incubation time criterion. Experimentally observed different relations between ultimate stresses of concrete and mortar in static and dynamic conditions are explained. It is obtained that compressive strength of mortar at a low strain rate is greater than that of concrete, but at a high strain rate the opposite is true. Influence of confinement pressure on the mechanism of dynamic strength for concretes and rocks is discussed. Both size effect and scale effect for concrete and rocks samples subjected to impact loading are analyzed. Statistical nature of a size effect contrasts to a scale effect that is related to the definition of a spatiooral representative volume determining the fracture event on the given scale level.
UR - http://www.scopus.com/inward/record.url?scp=84958069068&partnerID=8YFLogxK
U2 - 10.1051/epjconf/20159404005
DO - 10.1051/epjconf/20159404005
M3 - Conference contribution
T3 - EPJ Web of Conferences
BT - DYMAT 2015 - 11th International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading
A2 - Cadoni, Ezio
PB - EDP Sciences
T2 - 11th International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading, DYMAT 2015
Y2 - 7 September 2015 through 11 September 2015
ER -
ID: 3979028