Ride Comfort Analysis of Vibratory Roller via Numerical Simulation and Experiment

Abstract

In this study, based on the analysis of nonlinear geometric characteristics of wheel-deformation of soil ground contact and the weighted r.m.s acceleration responses of the vertical driver’s seat, pitch and roll angle of the cab are chosen as objective functions, a 3D nonlinear dynamic model of a single drum vibratory roller was developed based on Adam D. and Kopf F’s elastic-plastic soil model and Bekker hypothesis of the soft soil ground. Matlab/Simulink software is used to simulate the nonlinear dynamic models and calculate the objective functions according to the ISO 2631: 1997 (E) standard such as the weighted r.m.s acceleration responses of the vertical driver’s seat, pitch and roll angle of the cab. An experiment was set up to measure ride comfort for vibratory roller when vehicle compacts and moves under four different operating conditions. The numerical simulation results for ride comfort analysis were compared with the experimental results whicle have verified the validity of models. Ride analysis results are shown that vibratory roller ride comfort is very poor in the most of the operating conditions. The study can provide a basis for the isolation system optimum design of the off-road vehicle.