AN EMBEDDED-CRACK FINITE ELEMENT APPROACH TO QUASI-BRITTLE FRACTURE

摘要

A finite element approach based on the definitionof enriched displacement fields through the introduction ofdiscontinuous interpolation functions is proposed, to theultimate purpose of reducing the analysis of quasi-brittlefracture to a discretized problem formulated in terms ofinterface variables only. Beyond avoiding the need of anyremeshing or inter-element boundary realignment strategy, theproposed approach allows to reduce the computation burden andto discuss about stability and bifurcation of the fracture processes.