The resonant solution on forced oscillation of A2B model is given and the modes of vibration on resonant frequency are discussed.
给出了A2B模型受迫振动的两个共振解，讨论了共振频率下的振动模式。
2
The Excited frequency of forcedvibration diverge from the Natural frequency of the machine tool, and the machine tool can be put on the practical application.