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

概要

論文の詳細を見る
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 ω_j=^^~ 3ω_i or ω_j=^^~5ω_i (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 ω_j does not coincide with 3ω_i or 5ω_i 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.
一般社団法人日本機械学会の論文