TY - GEN

T1 - Multiscale Fracture Model for Quasi-brittle Materials

AU - Petrov, Yuri V.

AU - Bratov, Vladimir

PY - 2011

Y1 - 2011

N2 - Fracture of quasi-brittle heterogeneous materials is steered by processes at several different scale levels. These processes can progress independently or affect each other. In order to model fracture of such materials one should account for all rupture processes contributing to overall fracture process. This paper is presenting structural-temporal approach for analysis of multiscale nature of brittle fracture. Notion of spatial-temporal cell for different scale levels is introduced. Problem of experimental determination of a fixed scale level is discussed. Possible interconnections of this scale level with higher and lower scale levels are discussed. It is shown that this can give a possibility to predict fracture on a higher (real) scale level having experimental data obtained on a lower (laboratory) scale. This possibility is of extreme importance for many applications where the possibility to evaluate material strength properties on real structure scale level does not exist (ex. geological objects, big concrete structures, trunk pipelines, etc.).

AB - Fracture of quasi-brittle heterogeneous materials is steered by processes at several different scale levels. These processes can progress independently or affect each other. In order to model fracture of such materials one should account for all rupture processes contributing to overall fracture process. This paper is presenting structural-temporal approach for analysis of multiscale nature of brittle fracture. Notion of spatial-temporal cell for different scale levels is introduced. Problem of experimental determination of a fixed scale level is discussed. Possible interconnections of this scale level with higher and lower scale levels are discussed. It is shown that this can give a possibility to predict fracture on a higher (real) scale level having experimental data obtained on a lower (laboratory) scale. This possibility is of extreme importance for many applications where the possibility to evaluate material strength properties on real structure scale level does not exist (ex. geological objects, big concrete structures, trunk pipelines, etc.).

KW - brittle fracture

KW - multiscale

KW - incubation time

KW - steel

KW - pipeline

KW - dynamic crack propagation

KW - scale levels

KW - FEM

KW - INITIATION

KW - STRENGTH

U2 - 10.4028/www.scientific.net/AMM.82.160

DO - 10.4028/www.scientific.net/AMM.82.160

M3 - статья в сборнике материалов конференции

SN - 978-3-03785-217-0

T3 - Applied Mechanics and Materials

SP - 160

EP - 165

BT - PERFORMANCE, PROTECTION AND STRENGTHENING OF STRUCTURES UNDER EXTREME LOADING

A2 - Cadoni, E

A2 - DiPrisco, M

PB - Trans Tech Publications Ltd

Y2 - 30 August 2011 through 1 September 2011

ER -