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This work deals with the application of the micromechanical Gurson-Tvergaard (GT) model to the
determination of the residual strength of analuminumflat stiffened panel (2024 T3) with a central through crack, by means
of finite element simulations. The load condition is represented by a monotonic traction along the direction orthogonal to
the crack plane. The used Finite Element code is WARP 3D®, which allows simulating ductile damage propagation by
considering the GT model.
Numerical results have been compared with experimental ones available in literature. In the second part of the work, a
home madeprocedurefounded on the SDI (Stochastic Design Improvement) technique is presented and applied to the
improvement of the residual strength properties of the considered panel.