000009228 001__ 9228
000009228 005__ 20141204092420.0
000009228 04107 $$aeng
000009228 046__ $$k12/05/2014
000009228 100__ $$aVeselý, V.
000009228 24500 $$aNumerical prediction of parasitic energy dissipation in wedge splitting tests on concrete specimens

000009228 24630 $$n18.$$pEngineering Mechanics 2012
000009228 260__ $$bInstitute of Theoretical and Applied Mechanics, AS CR, Prague
000009228 506__ $$arestricted
000009228 520__ $$2eng$$aUndesirable energy dissipation taking place during wedge-splitting tests on cementitious composites and resulting in overestimation of the values of the determined fracture-mechanical characteristics of the tested materials is investigated in this paper via numerical simulations performed using a commercial finite element method tool with an implemented cohesive crack model. The rather broad range of cohesive behaviour of the studied materials was simulated through adjustments made to the corresponding characteristic length of the composite. The parasitic amount of energy is dissipated in fracture processes around the corners of the groove for the insertion of the loading platens. This amount was extracted from simulated load-displacement curves; it is observed that the amount considerably depends on the specimen proportions and only slightly on the level of material brittleness.

000009228 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009228 653__ $$awedge-splitting test, concrete fracture, specimen proportions, energy dissipation, numerical simulation

000009228 7112_ $$aEngineering Mechanics 2012$$cSvratka (CZ)$$d12/05/2014 - 15/05/2014$$gEM2012
000009228 720__ $$aVeselý, V.$$iHolušová, T.$$iSeitl, S.
000009228 8560_ $$ffischerc@itam.cas.cz
000009228 8564_ $$s1176540$$uhttps://invenio.itam.cas.cz/record/9228/files/186_Vesely_V-FT.pdf$$yOriginal version of the author's contribution as presented on CD, paper (No. 186).
000009228 962__ $$r8924
000009228 980__ $$aPAPER