EXPERIMENTAL RESEARCH ON FREIGHT CARS WITH MAXIMUM WEAR OF RUNNING GEAR AND IN THE PRESENCE OF DEVIATIONS FROM TRACK MAINTENANCE STANDARDS

The results are given of a set of tests of freight car dynamics and track forces associated with operating loaded four-axle gondolas with MT-50 and TsNII-Kh3 trucks under the most unfavorable combination of truck wear and poor track conditions. These track conditions included artificially induced irregularities in track geometry. The results include the effects of truck wear and track geometry deviations on the dynamic indices of gondolas and track forces at train speeds up to 120 km/hr. Also given is the methodology for the tests.