Prefracture time of gabbro specimens in a damage accumulation model

In the work, we experimentally determined the characteristic prefracture time of gabbro specimens in three-point bending. The obtained prefracture time was used to estimate the parameters in a model of brittle and quasibrittle material. Based on the verified model, numerical modeling was performed t...

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Bibliographic Details
Published inPhysical mesomechanics Vol. 17; no. 3; pp. 199 - 203
Main Authors Makarov, P. V., Eremin, M. O., Kostandov, Yu. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.07.2014
Subjects
Classical Mechanics
Materials Science
Physics
Physics and Astronomy
Solid State Physics
fracture nucleus
damage accumulation kinetics
prefracture time
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Summary:In the work, we experimentally determined the characteristic prefracture time of gabbro specimens in three-point bending. The obtained prefracture time was used to estimate the parameters in a model of brittle and quasibrittle material. Based on the verified model, numerical modeling was performed to describe the stress-strain evolution in gabbro specimens under three-point bending. The experiment and numerical calculations show that the final deformation stage involves beam deflection in blowup mode.
ISSN:1029-9599
1990-5424
DOI:10.1134/S1029959914030047