232 小型マイクによる農業用タイヤの回転時の振動モード計測

概要

論文の詳細を見る
When agricultural machines are operated on pavements, the vibration and noise caused by the interaction between the tire lugs and the road surface are inevitable. In a conventional study, it is considered that the dynamic behavior of a rolling agricultural tire is influenced by the vibration characteristics of the tire. Resonance occurs when the lug excitation frequency of the tire, which is defined as the lug number multiplied by the number of revolutions of the tire, becomes equal to the natural frequency of the tire. In other words, the rolling tire shows large vibrations in the direction of the natural mode corresponding to the natural frequency of the tire. However, the vibration mode of the rolling tire in resonance state has not yet been clarified. In this study, it is confirmed that the dynamic behavior of the rolling tire can be evaluated by performing sound pressure measurements at near field using microphones. Further, the vibration mode in the resonance state is identified by performing simultaneous measurements of the sound pressure, and it is confirmed that the vibration mode corresponds to the natural mode of the tire.
一般社団法人日本機械学会の論文
2011-09-05