A modal analysis of disk in steam turbine is discussed in this paper. The analysis is performed with two methods: modal analysis of integrated blades-disk and of cyclic symmetric structure with ANSYS. The disk mode shape is summed up in five shapes: the disk vibrates at each nodal diameter with blades vibrating mainly in axial A0 shape, in tangent A0 shape, in twist shape, in tangent A1 shape and the disk vibrates in umbrella shape. Finally a safety assessment about disk vibration is given in the paper.
An Analysis on Disk Vibration in Steam Turbine
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Sun, Y, & Yu, E. "An Analysis on Disk Vibration in Steam Turbine." Proceedings of the ASME 2005 Power Conference. ASME 2005 Power Conference. Chicago, Illinois, USA. April 5–7, 2005. pp. 559-564. ASME. https://doi.org/10.1115/PWR2005-50320
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