This study examined the behavior of steel cylindrical shells under strain-controlled loading and axial cyclic loading. Experimental tests were carried out by an INSTRON 8802 servo-hydraulic. Under strain-controlled loading, the softening hysteresis curve is observed in shells. Because of buckling made in the compression area, the softening is intensified. Moreover, the effect of cutout on the behavior of hysteresis curves of steel cylindrical shells was also examined under this type of loading. The results show that cutout accelerates the softening behavior in steel cylindrical shells. Numerical analysis was performed by ABAQUS using hardening models. The accuracy of these models was compared with experimental results. Linear kinematic hardening model cannot simulate the softening behavior of the shell, but the model of nonlinear isotropic and kinematic hardening can simulate the softening behavior of the shell well. The residual plastic strain is obtained close to the experimental results with this model.

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