document: The dynamics of a railway freight wagon wheelset with dry friction damping We investigate the dynamics of a simple model of a wheelset that supports one end of a railway freight wagon by springs with linear characteristics and dry friction dampers . The wagon runs on an ideal , straight and level track with constant speed . The lateral dynamics in dependence on the speed is examined . We have included stick-slip and hysteresis in our model of the dry friction and assume that Coulomb 's law holds during the slip phase . It is found that the action of dry friction completely changes the bifurcation diagram , and that the longitudinal component of the dry friction damping forces destabilizes the wagon
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