Boronenko Yu. P., Belgorodtseva T. M., Kukushina N. A.

The paper looks at technical and economic parameters of foreign-made coupled freight platforms designed for transportation of large-tonnage containers, and compares them to the parameters of Russia's long-base platforms. Coupled platform design solutions are chosen for operation on the Russian Federation's rail network on the basis of comparative analysis.

Keywords: coupled platform, design, technical and economic parameters.

Contacts: boron49@yandex.ru

Turutin I. V., Rudakova Ye. A.

Description of the design of three-piece bogies for 27t per axle and 20t per axle load is given. Innovations concern the design of interconnection between the adapter and the side frame, application of a spatial wedge, two pairs of constant-contact side bearings to accommodate articulated vehicles, and brake system with double brake shoes to provide efficiency up to 140 km/h design speed for 20t per axle vehicles, and up to 100 km/h for 27t per axle vehicles.

Keywords: three-piece bogies, spatial wedge, contact side bearings, double brake shoes.

Contacts: turutin-nvc@yandex.ru

Atamanchuk N. A., Tsyganskaya L. V.

Increasing holding and carrying capacity of tank wagons is a vital task in improving efficiency of transportation of liquid cargo. The paper looks at the various design and technical solutions which allow to increase said indicators. The most rational design scheme, corresponding to today's demands for tank wagons and allowing to increase their productivity, is chosen after an analysis.

Keywords: tank wagon, light petroleum products, increasing carrying capacity, maximum stress, variable cross-section barrel.

Contacts: atam88@mail.ru

Bondarenko A. I.

The paper looks at various designs of wagons for transportation of wheeled vehicles used in the railways of Russia and Western Europe, and proposes a structural scheme of a platform wagon which allows to increase efficiency of such transportation.

Keywords: platform wagon, motor semi-trailer, piggy-back transportation, transportation of wheeled vehicles.

Contacts: alex.bondarenko89@gmail.com

Kozhokar K. V.

Increasing design speed and cutting dead weight are the main tasks in building modern rolling stock. Design and technical solutions conductive to that are evaluated, and a structural scheme of a frame, which corresponds to today's specifications for freight wagons, is proposed. Braking system allowing for braking efficiency required for high-speed flat wagon is designed.

Keywords: flat wagon, container transportation, increasing design speed, braking efficiency.

Contacts: kris.kozhokar@gmail.com

Romen Yu. S., Orlova A. M., Tikhov M. S., Zavertalyuk A. V.

The paper describes tests to determine permitted movement speeds by interaction conditions between rolling stock and the rail for straight, flat and steep circular curves, and at track switches, with measurements of dynamic and power processes. Totality of values of vertical and lateral forces, which exist in the wheel - rail system and in track elements, is looked at.

Keywords: interchange of vehicles, tests, axle loading.

Contacts: a-orlova@yandex.ru

Bubnov V. M., Myamlin S. V., Mankevich N.B.

The paper describes the results of tests by effect on the railway and turnouts from freight cars with different wedge designs of spring hanging. Analysis of test results showing freight car bogie design model 18-1711 with spatial and flat wedge shape requirements in effect on the upper arrangement of railway track and prove the possibility of unification of bolster beams of indicated freight car bogie with model 18-100 regarding contact surfaces for wedge systems of spring hanging.

Keywords: freight cars bogie, wedge designs, spring hanging, spatial and flat wedge, unification, contact surfaces for wedge systems.

Contacts: bubnov@azovmash.com

Melnik R.

The aim of the paper is to present results of an experiment and a simulation in order to obtain some information on dynamical responses of damaged suspension in rail vehicles. The experiment was done on passenger and freight cars. The faults introduced to suspension include reduction of stiffness in primary suspension and loss of damper in secondary suspension. Obtained results from the experiment were compared to simulation results.

Keywords: freight car, springs fracture, simulation analysis, VI-RAIL software system.

Contacts: monit@it.pw.edu.pl

Castaneda H. L., Martinod R. R., Betancur G. G.

This work presents the results of the research process focused on the methodology developed for Operation Modal Analysis (OMA) applied to urban railway systems, studying the dynamical performance of a railway vehicle with a two-stage suspension.

Keywords: EMA, IRF, LSCE, multi-body model, OMA, railway testing, stabilization diagram.

Contacts: lcasta@eafit.edu.co

Saidova A. V., Orlova A. M.

The research sought to justify the choice of wear factor for Archard equation, and traction coefficient to calculate wheel-profile wear using dynamic models. The paper also presents results of wagon endurance tests carried out at the VNIIZhT JSC (Railway Research Institute) experimental track, of wheel hardness measurements, and of wheel wear simulation in MEDYNA software system.

Keywords: bogie, wheel wear, wear simulation, wear factor, traction coefficient, wheel hardness.

Contacts: av-saidova@yandex.ru

Zhebanov A. V., Komarova T. A., Moiseyev V. I.

The paper looks at cooling regime during transportation of semi-liquid oil products (heating oil, lube oil) in tank wagons, accounting for elements' influence on the tank wagons and for natural convection of hot liquid inside the tank-wagon barrel.

Keywords: tank wagon, semi-liquid oil products, rail transportation, winter conditions, heat exchange with the environment

Contacts: moiseev_v_i@list.ru

Myamlin V. V.

Advantages of the flexible flows for repair of cars, which take into account the probabilistic nature of repair operations and allow to avoid the impact of many negative factors inherent in the rigid mass-production lines, and the simulation algorithm of the operation of such flows, which shows the features of their simulation as multi-phase, multi-channel queuing systems, is presented.

Keywords: repair of cars, flexible flow, simulation algorithm

Contacts: minimax1992@gmail.com

Bespalko S. V., Bogachev V. I.

The paper looks into the value levels of hydraulic pressure caused by hydraulic shock which occurs in tank-wagon barrels during some dynamic processes, and forms a simulation model of hydraulic shock, which is introduced into the simulation model of vibration of tank wagon, accounting for surging of the liquid load.

Keywords: hydraulic shock, surging of liquid loads, tank wagon.

Contacts: bespalco@hotbox.ru

Romen Yu. S., Muginshteyn L. A., Neverova L. I.

The paper looks at the influence of axial forces in trains which travel at speeds of over 50 km/h on derailment, in cases when unloaded wagons are included, and evaluates transverse-longitudinal stability of the train wagon system's movement.

Keywords: axial forces, derailment safety, load influence.

Contacts: uromen@mail.ru

Kovtun Ye. N., Markova O. M., Maly V. V.

The paper looks at the movement of a freight train on curved rail track section in braking regime, and at the influence of parameters such as movement speed, curve radius, presence and location of unloaded cars in the train on the train's movement safety.

Keywords: freight car, train, braking, traffic safety.

Contacts: olgamarkova2002@mail.ru