Dynamic Load and Strength Determination of Carrying Structure of Wagons Transported by Ferries

Alyona Lovska,Oleksij Fomin,Pavel Kučera,Václav Píštěk

doi:10.3390/jmse8110902

Abstract

A rapid development of economic relations between states has required an introduction of combined rail/ferry transportation. A feature of this type of transportation is the possibility of wagons traveling by sea on specially equipped ships—railway ferries. However, the transportation of wagons by sea is accompanied by damage to their structures. This follows from the fact that the wagons are not adapted to this type of transportation. In addition, the design of wagons does not consider the loads that can act on them during transportation by sea. In this connection, it is important to study the dynamic loading and strength of wagons during their transportation by sea. The current work investigated into dynamic load on the carrying structure of wagons transported by ferries using mathematical and computer modelling and defined accelerations on the wagon body. The adequacy of the models was checked with an F-test. The results of strength calculation for the carrying structure of a wagon made it possible to conclude that a typical fixation diagram does not provide the admissible range of strength parameters. The current work proposed an improved fixation diagram for cars on the deck with the viscous binder. The solution was substantiated by the results of the mathematical modelling of dynamic forces, strength, and stability of the carrying structure of a wagon on the deck. The results of the work will contribute to the creation of recommendations for the transportation of wagons on ferries. The research can contribute to safe transportation of wagons by ferries, and higher efficiency of the combined transportation

Highlights

A rapid integration of some European and Asian countries into the system of international transport corridors has required formation of combined transport systems [1,2,3], one of the most promising of which is the rail/ferry transportation
The study is based on mathematical modelling cap of dynamic forces on the carrying structure of a rail vehicle
Mst = pand the adequacy of the findings obtained, defined stability values for the carrying structure(13)

Summary

Introduction

A rapid integration of some European and Asian countries into the system of international transport corridors has required formation of combined transport systems [1,2,3], one of the most promising of which is the rail/ferry transportation. A special characteristic of such transportation is possibility to transport rail vehicles by special transport means—train ferries (Figure 1). The rail vehicles transported are located on the deck tracks. The wagons are secured on the deck with typical multiple-use lashing devices. Among them are chain binders (eight units per wagon), mechanical support jacks (four units per wagon), brake shoes installed under the end wagon wheels in the bathes, and buffer stops (Figure 2).

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