AbstractIn this study, the effect of geometrical roughness of a non-deformable and road surface on the mobility performance of a pneumatic tyre is investigated. A system function which represents the theoretical relationship between the drawbar pull and the random traction surface geometry is developed in the frequency domain, associated with the energy conservation law. Prior to the analysis, measurement of road profile is achieved using an ultrasonic distance detector, and characterization of the stochastic road profile is evaluated by a power spectral density function. Further to this, the resulting drawbar pull and tractive efficiency for given slip rate, applied torque, tyre characteristics and vehicle moving velocity are evaluated using the system function and road surface geometry. The enveloping function, describing the modification effect of the original road surface profile by a flexible tyre, is also experimentally investigated. Systematic laboratory tests are carried out using four pseudo-random rough traction surfaces, for comparison and verification of the theoretical predictions.
Road surface roughness and tyre performance
Journal of Terramechanics ; 27 , 3 ; 219-239
1990-01-01
21 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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