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Finite-deformation irreversible cohesive elements for three-dimensional crack propagation analysis. (English) Zbl 0932.74067
Summary: We develop a three-dimensional finite-deformation cohesive element and a class of irreversible cohesive laws which enable an accurate and efficient tracking of dynamically growing cracks. The cohesive element governs the separation of the crack flanks in accordance with an irreversible cohesive law, eventually leading to the formation of free surfaces, and is compatible with a conventional finite element discretization of the bulk material. The versatility and predictive ability of the method is demonstrated through the simulation of a drop-weight dynamic fracture test. The ability of the method to approximate the experimentally observed crack-tip trajectory is particularly noteworthy.
Reviewer: Reviewer (Berlin)

MSC:
74S05 Finite element methods applied to problems in solid mechanics
74R20 Anelastic fracture and damage
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