Dynamics of articulated vehicles by means of multibody methods.
Date
2015Author
Adamiec-Wójcik, Iwona
Awrejcewicz, Jan
Grzegożek, Witold
Wojciech, Stanisław
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The paper presents modelling of an articulated vehicle by means of joint
coordinates, which enable us to describe the motion of the system with a minimal
number of generalised coordinates. We consider a model of a semi-trailer formulated
using joint coordinates and homogenous transformations. Such an approach enables
us to treat the vehicle as a kinematic chain consisting of three single units with an
even number of wheels. This means that a single unit vehicle has a structure of an
open kinematic chain in a tree form. The contact of wheels with the road is modelled
by the Dugoff-Uffelman model. The model is validated by comparing the simulation
results with those obtained from experimental measurements. Friction in the fifth
wheel is one of the important parameters influencing the motion of a tractor with a
semi-trailer. The model presented enables us to analyse different models of friction in
the fifth wheel. The influence of those friction models on the results is presented and
discussed.
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