چكيده لاتين :
In this paper, classical thin shell theory is used to analyze vibration and critical
speed of simply supported rotating orthotropic cylindrical shells. The effects
of centrifugal and Coriolis forces due to the rotation are considered in the
present formulation. In addition, axial load is applied to cylinder as a ratio
of critical buckling load, Finally the effects of orthotropic ratio, material and
geometry of the shell as well as axial loads on bifurcation of natural frequency
are investigated,
