000001741 001__ 1741
000001741 005__ 20141118153456.0
000001741 04107 $$acze
000001741 046__ $$k2007-05-14
000001741 100__ $$aVeselý, V.
000001741 24500 $$aFRACTURE ENERGY OF QUASI-BRITTLE MATERIALS: VARIANTS OF ITS EXPRESSION AND DETERMINATION, AND RELATED EFFECTS

000001741 24630 $$n13$$pEngineering Mechanics 2007
000001741 260__ $$bInstitute of Thermomechanics AS CR, v.v.i., Prague
000001741 506__ $$arestricted
000001741 520__ $$2eng$$aThis paper is focused on fracture energy which belongs to the basic fracture-mechanical characteristics of quasi-brittle materials. This parameter is explored here from the point of view of two most frequently used non-linear approaches to modelling of quasi-brittle fracture – cohesive crack models and equivalent elastic crack models. Different expressions of energy dissipated during the fracture process, i.e. work of fracture and specific fracture energy, are investigated. The paper deals also with the influence of specimen size and testing geometry on the value of mentioned fracture characteristics. The research is conducted by means of numerical simulations of three-point bending of notched beams with several specimen sizes. The simulations or fracture tests are performed by using ATENA FEM software.

000001741 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000001741 653__ $$a

000001741 7112_ $$aEngineering Mechanics 2007$$cSvratka (CZ)$$d2007-05-14 / 2007-05-17$$gEM2007
000001741 720__ $$aVeselý, V.$$iŘoutil, L.$$iKeršner, Z.
000001741 8560_ $$ffischerc@itam.cas.cz
000001741 8564_ $$s438887$$uhttp://invenio.itam.cas.cz/record/1741/files/156-Veselyv-PT.pdf$$y
             Original version of the author's contribution as presented on CD, .
            
000001741 962__ $$r1585
000001741 980__ $$aPAPER