VIBRO-IMPACTS INDUCED BY IRREGULAR ROLLING SURFACES OF RAILWAY RAILS AND WHEELS

Irregularities on rolling surfaces of deformable compact bodies induce normal contact vibrations and vibro-impacts in particular. Modelling, simulation and analysis of such an excitation and the system dynami-cal response are the objects of the study. Parameter analysis of transient vibro-impacts induced by a single irregularity is helpful in the understan-ding of dynamical properties of the system. Moreover, the analysis may be helpful in experiment design for detecting defects of rolling surfaces and faults of neighbour structures suspending/supporting the rolling bo-dies. Simulations performed with very simple models are next compared with results obtained from simulations of the whole wagon performed by using the Adams/Rail software. Key words: unilateral contact, contact vibration, wheel-rail contact 1