TY  - JOUR
PY  - 1995//
TI  - Study of the longitudinal slip and side slip of a wheeled tractor under variable vertical load
JO  - Heavy vehicle systems
A1  - Russev, RG
A1  - Nhu, DT
A1  - Todorov, TI
A1  - Petrov, IL
SP  - 270
EP  - 284
VL  - 2
IS  - 3-4
N2  - This paper describes a theoretical and experimental study of an agricultural tractor subject to harmonic excitations, and the effects of such a road input on the tractive performance and the lateral stability of a tractor. The tractor is represented by a two-degree-of-freedom model for evaluation of the vertical displacement of the wheels. Two nonlinear models are used to describe the longitudinal wheelslip and side slip angles. A hydraulic driven exciter mounted on the rear part of the tractor is used to simulate the harmonic input. Under these conditions a tractor fitted with pneumatic tyres was tested and the vibrations of the wheel and wheelslip were measured. It is shown that the variable normal road reaction exerts a negative effect on the tractive performances of the tractor, and that this should be taken into account when predicting and analysing the dynamic characteristics of the tractors.<p />
LA  - 
SN  - 1351-7848
UR  - http://dx.doi.org/
ID  - ref1
ER  -