Data di Pubblicazione:
2008
Abstract:
An incremental description of (linear elastic) fracture mechanics is presented which shows a perfect analogy with the
plasticity theory. After comparing (in terms of angle of propagation, of safe-equilibrium domains, and of energy
dissipation) several criteria for crack propagation, the formulation of a generic criterion stemming from the associated
plasticity theory is presented and its feature discussed. The analogy between plasticity and quasi-static crack growth leads
also to a new algorithm for crack propagation for an arbitrary number of cracks in multi-connected materials, which is
driven by the increment of external actions. Stability of crack path under mode I loading is finally analyzed.
plasticity theory. After comparing (in terms of angle of propagation, of safe-equilibrium domains, and of energy
dissipation) several criteria for crack propagation, the formulation of a generic criterion stemming from the associated
plasticity theory is presented and its feature discussed. The analogy between plasticity and quasi-static crack growth leads
also to a new algorithm for crack propagation for an arbitrary number of cracks in multi-connected materials, which is
driven by the increment of external actions. Stability of crack path under mode I loading is finally analyzed.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
Plasticity; Fracture mechanics; Quasi-static crack growth; Crack propagation criteria and algorithms; Mode I crack path
stability
Elenco autori:
Salvadori, Alberto
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