基礎励振を受ける並進・傾き連成系の振動 : オートパラメトリック共振と重心高さ,偏重心,剛性差の影響(機械力学,計測,自動制御)

概要

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The vibration characteristics of the translation motion and inclination motion coupled systems, which is the dynamical models of train, vehicle, and so on, are studied. The nonlinear vibration of such a system subjects to the base periodic displacement is investigated by numerical simulation and theoretical analysis. The occurrence of the auto-parametric resonance at the resonance point of the translational motion is observed when the ratio between the natural frequencies of the inclinational motion and the translational motion is close to 1:2. Also, the occurrence of an almost periodic motion is observed when this ratio is slightly different from 1:2. The occurrence regions of the auto parametric resonance and the almost periodic motion are discussed. Besides, the influences of discrepancies of the center of mass which produce slight linear coupling terms between the translational motion and the inclinational motion are investigated. Furthermore, these theoretical results are confirmed by the experiment.
2006-08-25