Abstract
Results of an extensive experimental program on the stability of thin cylindrical shells with cut-out under axial compression are presented and discussed. The experimental data indicate that the buckling coefficient varies with effective length-radius and radius-thickness ratio. Some other reports have been showed the buckling coefficient between R/t and L/R relations. However, there is no indicating the above synthetic investigation which introduced the effect of cutout in a shell. To determine the buckling coefficient with a circular hole, there empirical equation studied in here using the method of averages and least squares. In addition, the critical buckling load of thin cylindrical shell with multiple circular holes also reported.