Thermal effects on the natural frequency for the nonlinear free vibration of co-rotating disks are investigated for non-uniform temperature distributions relative to airflow induced by disk rotation. The natural frequencies for symmetric and asymmetric responses of a 3.5 inch diameter computer memory disk are calculated. When the disk is heated, its stiffness becomes larger for the two lowest nodal diameter numbers and smaller for the other nodal diameter numbers. It implies that the vibration of heated, rotating disks for the higher nodal diameter numbers may be induced more easily than the cooled one.
- Design Engineering Division and Computers and Information in Engineering Division
Thermal Effects on the Natural Frequency of Nonlinear, Co-Rotating Disks
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Luo, ACJ, Saniei, N, & Harp, WR. "Thermal Effects on the Natural Frequency of Nonlinear, Co-Rotating Disks." Proceedings of the ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 1: 20th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C. Long Beach, California, USA. September 24–28, 2005. pp. 869-876. ASME. https://doi.org/10.1115/DETC2005-84143
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