In this paper, a coupling nonlinear dynamic model of the drum and subgrade is established for the vibratory roller. The dynamic characteristics of the rigid drum of the vibratory roller in the process of vibratory compaction are comprehensively investigated by time history, phase diagram, frequency spectrum, Poincare map, and bifurcation diagram. During the compaction process, the stiffness of the subgrade increases and the motion of the rigid drum of the vibratory roller changes from a single period to multiple periods and finally enters chaos by the way of period doubling. Moreover, the roller parameters also significantly affect the dynamic characteristics of the rigid drum and the compaction effect of the subgrade. Based on detailed numerical results, a parameter adjustment strategy about the roller frequency and nominal amplitude is proposed, which can avoid the “bouncing” of the drum during compaction and improve the compaction efficiency.

中文翻译：

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弹性路基振动压路机刚性滚筒的非线性动力学

本文建立了振动压路机滚筒与路基耦合非线性动力学模型。通过时程、相图、频谱、庞加莱图、分岔图等方法综合研究了振动压路机刚性滚筒在振动压实过程中的动态特性。在压实过程中，路基刚度增加，振动压路机刚性滚筒的运动由单周期变为多周期，最终以倍周期的方式进入混沌。此外，压路机参数也显着影响刚性滚筒的动态特性和路基的压实效果。根据详细的数值结果，提出了滚子频率和标称振幅的参数调整策略，