Effect of boundary conditions on natural frequencies for rotating composite cylindrical shells with orthogonal stiffeners

Vibration Analysis of Grid-Stiffened Circular Cylindrical Shells with Full Free Edges

“…Yang and Zhou [10] presented the transfer function method to analyze the ringstiffened shell. Lee and Kim [11,12] investigated the effect of rotation speeds and boundary conditions on the frequencies for the orthogonally stiffened composite cylindrical shells treating the materials of stiffeners as equivalent isotropic. The mentioned papers were, however, limited to the shells with the uniform dimensional and evenly spaced stiffeners.…”

Transient Analysis of Ring-Stiffened Composite Cylindrical Shells With Both Edges Clamped

“…Yang and Zhou [2] presented the transfer function method to analyze the ring-sti!ened shell. Lee and Kim [3,4] investigated the e!ect of rotation speeds and boundary conditions on the frequencies for the orthogonally sti!ened composite cylindrical shells treating the materials of sti!eners as equivalent isotropic. The mentioned papers were, however, limited to the shells with the uniform dimensional and evenly spaced sti!eners.…”

“…In this analysis, the beam function [4] is used as the axial mode and can be expressed in a general form as…”

“…The admissible displacement functions [4] for freely vibrating cylindrical shell with any boundary conditions can be written as…”

Free Vibrations of Circular Cylindrical Shells With an Interior Plate Using the Receptance Method

“…Sewall et al [3,4] applied the Rayleigh}Ritz method to solve for the natural frequencies and mode shapes of sti!ened shells, circular and non-circular shells. Lee and Kim [5,6] studied the in#uence of various boundary conditions on the free vibrational behavior of the rotating composite cylindrical shells with axial and circumferential sti!eners. They used Love's shell theory based on the discrete sti!ener theory to derive the governing equation of the sti!ened shell.…”