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Estimation of stability of railway flat cars with various types of running gear against derailment

Domin Rostyslav, Domin Yurii, Cherniak Ganna

Problemy Kolejnictwa

2019

Z. 185

119--124

Issue related to ensuring safety of technical operation of flat cars for high speed containerized transportation by way of using new types of running gear is considered in the paper. Because of principal drawbacks of widely used bogies of freight cars possible use of axle box suspension bogies is considered for the equipment of high speed flat cars. Taking into consideration highly efficient application of mathematic simulation for the determination of dynamic performance of railway cars appropriate computer models were developed for the estimation of the conditions related to ensuring safe motion of flat cars. It was revealed as result of the simulation that in case of stability of wheelsets against derailment condition of safe operation of a flat car equipped with axle box suspension bogies is satisfied at travel speeds up to and including 150 km/h whereas safe travel of a flat car equipped with conventional bogies is ensured at travel speeds up to but 100 km/h. This conclusion gives bases to recommend equipment of flat cars for high speed containerized transportation with axle box suspension running gear.