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dc.contributor.authorEliás, Jan
dc.contributor.authorBazant, Zdenek P.
dc.description.abstractNumerical simulation is used to explore the behavior of concrete beams of different sizes and different notch lengths, loaded in three-point bending. The entire range of notch depth is studied. One limit case is type 1 fracture, which occurs when the notch depth is zero and the crack initiates from a smooth surface (this is the case of the modulus of rupture test). Another limit is type 2 fracture, which occurs for deep enough notches. Both cases exhibit very different size effects. The fracture is simulated numerically with a robust mesolevel lattice-particle model. The results shed light on the transitional behavior in which the notch depth is non-zero but not deep enough for developing the the type 2 size effect dominated by energy release from the structure. In agreement with experimental observations and theoretical predictions, the numerical results show evidence of a decreasing macroscopic fracture energy as the ligament gets very short.
dc.format.extent12 p.
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits
dc.subject.lcshFinite element method
dc.subject.lcshComputational methods in mechanics
dc.subject.lcshParticle methods (Numerical analysis)
dc.subject.otherfracture, concrete, lattice-particle model, size effect, notch variability
dc.titleFracturing in concrete via lattice-particle model
dc.typeConference report
dc.subject.lemacElements finits, Mètode dels
dc.rights.accessOpen Access
local.citation.contributorPARTICLES II
local.citation.publicationNamePARTICLES II : proceedings of the II International Conference on Particle-Based Methods : fundamentals and applications

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