Modelling of Energy Dissipation During Fracture of Concrete Notched Beams: Proportion of the Effective Crack and the Fracture Process Zone Consumption

摘要

The paper presents an analysis aiming at capturing the phenomenon of quasi-brittle fracture based on the record of the fracture tests on notched specimens. A method of separation of the energy amounts released for the crack advance and that dissipated within the volume of the sizeable nonlinear zone at the crack tip - the fracture process zone- is introduced. The approach is tested on selected data of published experimental campaigns accompanied with own conducted numerical simulations.