Applicability of the Vibration Correlation Technique for Estimation of the Buckling Load in Axial Compression of Cylindrical Isotropic Shells with and without Circular Cutouts

Table 4

Numerical buckling load prediction and VCT results for shells without cutouts.

Cylinder	Experimental; buckling load [kN]	Numerical predicted buckling load [kN] RBC/CBC	Deviation from experimental results [%] RBC/CBC	KDF; EXP/RBC/CBC	Predicted buckling load by VCT [kN]	Deviation from experimental results [%]
R29	36.33	36.45	0.31	0.54/-/0.55	38.16	−5.04
R30	38.32	44.96	14.8	0.57/-/0.67	38.36	−0.13
R31	51.98	49.76/51.08	−4.5/−1.8	0.78/0.75/0.77	46.08	11.35
R32	51.96	49.07/49.51	−5.9/−5.0	0.78/0.74/0.74	52.71	−1.44
R34	51.57	51.70/52.39	0.3/1.6	0.77/0.77/0.78	53.36	−3.47
R40	52.52	46.42/48.45	−13.1/−7.5	0.79/0.7/0.73	40.21	23.44

boundary conditions.