Samenvatting
This report contains an inquiry into a method to determine the effect of vertical vibration on frictional forces. Starting point in this report is the specific application of relative truckload shifting (for stiff or nonstiff piece-goods). This methods makes use of a mechanical simulator of a truckfloor. Several factors that may affect the shifting of loads can be varied and if necesary be measured. To illustrate how this model works, a small number of measurements have been carried out. These measurements also indicate the effects of these variables to the horizontal movement of the load on the truckfloor. (Author/publisher)