Under mixed-mode loading, the complete nucleation phase-field model matches benchmarks, the star-convex variational model produces spurious compressive cracks, and the hybrid cohesive-zone model propagates at an incorrect toughness.
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A comparison of phase field models of brittle fracture incorporating strength: I -- Mixed-mode loading
Under mixed-mode loading, the complete nucleation phase-field model matches benchmarks, the star-convex variational model produces spurious compressive cracks, and the hybrid cohesive-zone model propagates at an incorrect toughness.