engleski

Sophisticated finite strip for vibration analysis of a rotating cylindrical shell

In this article a two-node finite strip with eight degrees of freedom for free vibration analysis of pre-stressed rotating cylindrical shells is formulated. The circumferential mode shape profiles are described exactly using trigonometric functions. The axial mode shape profiles are approximated by bar and beam shape functions for membrane and bending displacements, respectively. In this way a semi-analytical formulation is facilitated so that the discretization is required only in the axial direction. The developed finite strip is validated by comparisons with analytical results. An excellent agreement is observed both for stationary and rotating shells.

Cylindrical shell ; Vibration ; Rotating structures ; Natural frequencies ; Rotating modes ; Finite strip method

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