振子由于受到阻尼的作用，能量不守恒。分析了振子在过阻尼和临界阻尼情况下的非周期衰变运动。
Affected by damping, the energy vibrator is no longer eternally fixed. This article analyses its irregular attenuated movement in the condition of over damping and critical damping.
沟道效应的运动阻尼与系统走向混沌的临界特征。
Motion damping in channelling effects and the chaotic behaviour of a system.
在临界转速区，系统响应为周期运动，振幅相应增大。
Within the supercritical speed range, the response of the rotor is periodical motion with the increase of amplitude.
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