A higher-order stress-based gradient-enhanced damage model based on isogeometric analysis

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Localizing gradient damage model with decreasing interactions (2017, methodology): “Because the length scale parameter(s) vanishes as the principal stress(es) tends towards zero, some forms of mesh dependency are observed during strain softening in [24].”
Phase field modelling of crack propagation, branching and coalescence in rocks (2018, unknown): “Gradient models (Thai et al. 2016), non-local models (Pijaudier-Cabot et al. 2004), models based on the screend-poisson equation (Areias et al. 2016a) and also phase field models are typical continuous approaches to fracture.”