Effect of Drum’s Excitation Frequency on Ride Comfort of a Single –Drum Vibratory Roller

Le Van Quynh, Nguyen Thanh Cong, Nguyen T. K. Thoa

vibratory roller, drum, excitation frequency, dynamic model, ride vibration

This study proposes a half-vehicle ride dynamic model of a single-drum vibratory roller interacting with the under the ground surface deformation to analyze the effects of drum’s excitation frequency on vehicle ride. The excitation frequencies for a dynamic drum affect not only soil compression efficiency, but also vehicle ride comfort. In order to evaluate the effect on vehicle ride comfort, the weighted r.m.s acceleration responses of the vertical driver’s seat and pitch angle of the cab according to the ISO 2631:1997(E) standard are chosen as objective functions. The excitation frequencies for a dynamic drum are respectively analyzed based on objective functions. The results show that the effects of drum’s excitation frequency on vehicle ride are very obvious especially at the range of the low excitation frequency values for a dynamic drum. The results of this are the theoretical basis for designing the dynamic systems of a single-drum vibratory roller.

https://doi.org/10.31871/WJRR.11.1.15