Abstract
In order to improve the vibratory roller’s ride comfort, a 3-D nonlinear dynamic model of the vehicle interacting with the off-road terrain is established. A damper hydraulic mount is studied and combined with the cab’s rubber mounts to simulate and evaluate the performance of the ride comfort. The weighted RMS acceleration responses of the vertical driver’s seat, the cab’s pitch and roll angle are chosen as objective functions. The results show that the cab’s rubber mounts combined with the damper hydraulic mount are clearly improved the ride comfort under various operating conditions. Especially, with damping coefficients cc3,4= 1.8 kN.s.m-1, the weighted RMS values of the vertical driver’s seat, the cab’s pitch and roll angle are greatly reduced by 27.8 %, 22.7 % and 64.3 % in condition of the vehicle traveling, and by 23.8 %, 20.0 % and 63.7 % in condition of the vehicle compacting on an elastic-plastic terrain.
Highlights
The off-road vibratory roller is a compactor which often uses in the field of the construction site, factories, etc
The results show that the weighted RMS acceleration responses of the driver’s seat (a ), the cab’s pitch and roll angle are lightly affected by the damping coefficients c, of the front-end mounts, whereas these values are strongly affected by the damping coefficients c, of the rear-end mounts and c, of all mounts i
It implies that the comfortable shake of the driver is enhanced while the vertical driver’s ride comfort is decreased
Summary
The off-road vibratory roller is a compactor which often uses in the field of the construction site, factories, etc. Almost the vibratory roller is not equipped with the suspension system to link between the chassis and the axles, so the vibration sources impact to the driver via the cab’s isolation system and driver’s seat suspension. Basic researches of the tire-deformable soil interaction [1,2,3], of the rigid drum and elastic-plastic soil interaction [4] indicated that the vibration responses of the vehicle are greatly influenced by off-road terrain. The vibrations of the vertical driver’s seat and the cab’s pitch angle are still great under operation conditions. ENHANCING THE RIDE COMFORT OF THE OFF-ROAD VIBRATORY ROLLER CAB BY ADDING DAMPER HYDRAULIC MOUNT. The performance of the ride comfort is evaluated through the weighted root-mean-square (RMS) acceleration responses of the vertical driver’s seat (a ), the cab’s pitch (a ) and roll (a ) angle under operation conditions
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