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This paper investigates the stability, load-carrying capacity and failure analysis of thin-walled plate
elements weakened by cut-out and subjected to axial compression. Tested plates were made in asym-
metric configuration from CFRP composite material with used autoclave technique. The scope of the
research included experimental tests on real samples and numerical calculations with using the finite
element method in the ABAQUS®program. The influence of the compressive load on the buckling
and postbuckling behavior and loss of load capacity of thin-walled composite plates was investigated.
Both, the experimental tests and the numerical analysis were carried out in the full load range, up to
the structure failure. In the experimental tests, acoustic emissions were used to analyze the damage
state of the composite material. Numerical calculations were carried out with the use of progressive
failure analysis, based on the initiation of the failure from the Hashin’s theory and the further evolution
of the failure based on the energy criterion. Numerical results of critical and post-critical state were
compare with experimental research showing areas prone to failure of the material. A measurable effect
of the conducted research was obtaining a high compatibility of the results of numerical and experimen-
tal calculations. Funding: The project/research was financed in the framework of the project Lublin
University of Technology-Regional Excellence Initiative, funded by the Polish Ministry of Science and
Higher Education (contract number 030/RID/2018/19).
