A buckling analysis has been carried out to investigate the response of laminated composite cylindrical panel with an elliptical\r\ncutout subject to axial loading. The numerical analysis was performed using the Abaqus finite-element software. The effect of the\r\nlocation and size of the cutout and also the composite ply angle on the buckling load of laminated composite cylindrical panel is\r\ninvestigated. Finally, simple equations, in the form of a buckling load reduction factor, were presented by using the least square\r\nregression method. The results give useful information into designing a laminated composite cylindrical panel, which can be used\r\nto improve the load capacity of cylindrical panels.
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