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A four-axle articulated vehicle with leaf spring suspensions was instrumented and run over a test track for a range of operating conditions.The instrumentation measured the dynamic tyre forces generated by all of the axles.as well as accelerations of the sprung and unspnrng masses.Road pro le data was measured for the test sections of interest The experimental data was used In validate a theoretical calculation of the dynamic behaviour of the vehicle.The paper presents two mathematical models of the vehicle: a six degrees of freedom trailer suspension model.and an eleven degrees of freedom tractor and semi-trailer model.Both models are two-dimensional.Theoretical predictions are compared with measurements from the road tests.and the discrepancies are discussed.
COLE et al. (Fri,) studied this question.