2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/115099We introduce a new model of irreversible quasistatic crack growth in which the evolution of cracks is the limit of a suitably modified $ε$-gradient flow of the energy functional, as the "viscosity" parameter $ε$ tends to zero.26 pages, 3 figuresAnalysis of PDEsFunctional Analysistext