Abstarct: In this research, ratcheting behavior of stainless steel 304L and Ck45 cylindrical panels under cyclic combined and axial loadings was studied numerically and experimentally. The SS304L cylindrical panels were fixed normal and oblique at angle of 20° with respect to the longitudinal direction of the panels and subjected to force-controlled cycling with non-zero mean force at the end of them. The Ck45 Cylindrical panels with various angels and same length were fixed normal with maximum stress 1.05 subjected to cyclic loading which causes the accumulation of plastic strain or ratcheting phenomena. Experimental tests were performed by a servo-hydraulic INSTRON 8802 machine. The numerical analysis was carried out by Abaqus using the advanced nonlinear isotropic/kinematic hardening model and results of numerical analysis were compared to experimental results. In this research, the effect of length, position angle, angle of cylindrical panel and loading history on ratcheting behavior were investigated. Linear relation was observed between plastic energy and rate of plastic deformation in one step loading. Analyzing the loading history of cylindrical panel under combined loading, by the prior load with higher force amplitude retards the ratcheting behavior and plastic deformation with smaller force amplitude. Also, cutout effect on cylindrical panels under these kinds of loading has been studied. In addition to studing effect of various subjects on ratcheting behavior, the effect of length and angle on life behavior was studied and observed that decrease life length with increasing length and angle of cylindrical panels.