Computing the Pitch & Roll Effects on Dynamic Forces Exerted on Pavements by Heavy Vehicles (original) (raw)
Because varying the load distribution across a loading axle or in between two axles can change substantially the dynamic forces on both the front and rear wheels of a vehicle, a simple two-contact model is applied in this investigation to compute the effect of the vehicle load distribution on the dynamic forces exerted on pavement surfaces in terms of various physical parameters characterizing the vehicle-road interaction. The proposed model becomes an axle load model when placed perpendicular to a wheel path; and it can be a half of a vehicle model when placed along a wheel path. Dynamic responses of the models are computed in Excel worksheets in terms of the vehicle characteristics and the characteristics of road profiles. The intensities for both the rates of the dynamic forces and the dynamic forces are evaluated by considering the rotational effect induced by road profiles. It is demonstrated that the pitch & roll motion can change substantially the magnitudes of these dynamic ...
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