Railway Wheel Squeal : 3rd Report, Squeal of a disk Simulating a wheel in internal resonances

We made an apparatus with a steel rod and a thin steel disk. A disk serving as a railway wheel was clamped at inner radius and was free at its end. When a certain relationship exists among the natural frequencies in the axial direction of the disk, various internal resonances occur. We analyzed a sq...

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Bibliographic Details
Published in:Bulletin of JSME 1985, Vol.28(237), pp.500-507
Main Authors: NAKAI, Mikio, YOKOI, Masayuki
Format: Article
Language:English
Subjects:
Friction
Internal Resonance
Non-linear Vibration
Sound
Squeal
Vibration of Continuous System
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Summary:We made an apparatus with a steel rod and a thin steel disk. A disk serving as a railway wheel was clamped at inner radius and was free at its end. When a certain relationship exists among the natural frequencies in the axial direction of the disk, various internal resonances occur. We analyzed a squeal of the disk in internal resonances theoretically. Consequently, in internal resonances between two i-th and j-th vibration modes, such as ωj=^^ 3ωi or ωj=^^5ωi (ω : natural circular frequency of the disk), squeals with only a frequency of j-th mode and with frequencies of two modes (i-th and j-th modes) occur, but a squeal of a single i-th mode does not occur. If ωj does not coincide with 3ωi or 5ωi completely, a frequency component of i-th mode is predominant in the squeal with frequencies of triple modes occurs. However, its generating region is very narrow.
ISSN:0021-3764
1881-1426
DOI:10.1299/jsme1958.28.500