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The objective of this study was to investigate the influence of eccentric compressive load on
the buckling, post-buckling and load-carrying capacity of thin-walled top-hat cross-section compos-
ite columns. The CFRP columns were manufactured by the autoclave technique. The scope of the
study involved performing experimental tests on real structures as well as numerical calculations by
the finite element method. The experimental tests were conducted in the full range of loading, until
the structure’s failure. Post-buckling equilibrium paths and acoustic emission signals were measured in
order to determine actual condition of the composite material. Nonlinear FEM calculations were made
by the progressive damage criterion, in which the damage initiation of the composite material was
estimated based on Hashin’s theory, whereas damage evolution was described by the energy criterion.
The numerical simulations were performed using the commercial software ABAQUS®. The numerical
results were in good agreement with the experimental results obtained for real structures. The results
demonstrated a significant influence of eccentric compressive load and configuration of composite layers
on the buckling and post-buckling characteristics of the tested structures.
