Modelling and simulation research of freight, bimodal train dynamics in terms of derailment

Aim of project
In the proposed research project, methodology and simulation investigations of safety of bimodal trains in terms of derailment will be presented. The model of a train will be composed of a definite number of freight wagons or/and bimodal cars equipped with UIC and Y25 suspension. The author intends to use AdamsRail software, especially designed for simulations of general multi-body systems. The general non-linear wheel-rail contact model, dry friction model of suspension, the model of coupling devices and model of pneumatic braking system will be utilized during simulations.

Parameters of the UIC suspension model were identified basing on research done at the Institute of Vehicles at Warsaw University of Technology. An original success of the project will be integration of suitable modules of the system ADAMS with a description of dry friction prepared in the form of differential equations, based on rules of unsmooth mechanics.

Expected results
The results obtained from the simulations provide reliable information on assessment of bimodal train with respect to measurements of safety against derailment in extreme conditions (acceleration and braking of the train).

The final results can be utilized in scientific-research centres, interested in the development of modern rail-road transportation means (especially bimodal transportation system). These results may be very important for potential users (rail enterprises) in near future, because transport of goods by bimodal trains belongs to the “Just in Time” system of transportation, very profitable from the economic point of view.