| 摘 要： | Cylindrical shells sliffened with rings and stringers are used in many structural application, (?)h as pipes conveymg fluids or gases and aerospace, In this paper, the (?)eral solution is obtained for free vibration of nonlinear deformation ring-and stringerstiffened cylindrical shell with arbitrary boundary condition by step reduction method, Finally, it is only necessary to solve a nonlinear algebraic equation. This equation is expressed as an analvtic form. Its convergence is proved. Three mumerical examples are (?)iven at the end of the paper which indicate that satisfactory results can be obtained by step reduction method.
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