Regenerative chatter is an unstable and detrimental vibration phenomenon stemming from the regenerative excitation of time-delay dynamic systems. Currently, research on regenerative chatter predominantly focuses on machining process, wherein chatter occurs when the process frequency aligns closely with the natural frequency of the tool-holder system. However, in plastic forming process conducted by heavy-load multi-DoF forming machine (MDFM), the process frequency is far smaller than the natural frequency of the tool-holder system. Despite this, chatter still occurs in the actual plastic forming process, challenging the explanatory capacity of existing chatter models developed for machining process.

中文翻译：

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重负荷多景度塑性成型过程中的颤振建模和分析


再生颤振是一种不稳定且有害的振动现象，源于时滞动态系统的再生激励。目前，再生振荡的研究主要集中在加工过程中，当加工频率与刀架系统的固有频率紧密一致时，就会发生振颤。然而，在重负荷多自由度成型机 （MDFM） 进行的塑性成型过程中，加工频率远小于刀架系统的固有频率。尽管如此，在实际的塑性成型过程中仍然存在颤振，这挑战了为加工过程开发的现有颤振模型的解释能力。