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In the presented paper, the phenomenon of failure of thin-walled composite structures was analysed.
The tested thin-walled structures were made of carbon-epoxy laminate using the autoclave method.
Experimental tests on actual structures and advanced numerical calculations using the finite element
method were conducted. The numerical calculations were carried out in the ABAQUS®software. The
study were conducted in the full load range, taking into account the failure phenomenon. During the
experimental tests, post-critical equilibrium paths were recorded. This approach made it possible to
carry out further analysis of the failure status of the composite material. Numerical simulations were
conducted using independent advanced damage models. The first damage model is model associated
with progressive failure analysis (PFA), based on the failure initiation (Hashin’s criterion) and the
damage evolution (energy criterion). Second damage model is cohesive zone model (CZM) which was
used in numerical studies in order to predict the delamination phenomenon. Additionally, the extended
finite element method (xFEM) was used to predict crack initiation and propagation. Both numerical
and experimental studies were carried out until the total loss of load-carrying capacity.
