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Research Article | 23-October-2017

USING A WHEEL PAIR WITH A COUNTER-FLANGE TO PREVENT DERAILMENT

The authors propose an engineering solution for a wheel pair with a counter-flange that satisfies the existing standards of vertical and horizontal dynamics and the movement stability index. An improved profile of a rail wheel with a counter-flange is developed. It provides additional contact in the horizontal plane in the situation of transverse vibrations of the wheel pair against the rail track, adds to carriage stability and increases the wheel’s resistance to derailment when passing a

Yuriy Iv. OSENIN, Larysa DEGTYAREVA, Galyna OSENINA, Oksana SERGIENKO

Transport Problems, Volume 12 , ISSUE 2, 13–18

Article | 24-November-2017

ANALYSIS OF FORMING TREAD WHEEL SETS

This paper shows the results of a theoretical study of profile high-speed grinding (PHSG) for forming tread wheel sets during repair instead of turning and mold-milling. Significant disadvantages of these methods are low capacity to adapt to the tool and inhomogeneous structure of the wheel material. This leads to understated treatment regimens and difficulties in recovering wheel sets with thermal and mechanical defects. This study carried out modeling and analysis of emerging cutting forces

Igor IVANOV, Dmitrii EVSEEV, Irina OVSYANIKOVA, Alexander TARAPANOV

Transport Problems, Volume 12 , ISSUE 3, 35–42

Article | 02-November-2017

CONTROL-CENTRIC SIMULATOR FOR MECHATRONICS DESIGN Case Study: Gyroscopically Stabilized Single Wheel Robot

to be used in a mechatronics system. Dynamic analysis of single wheel robot is used in this paper as an example to illustrate its uses. The simulating environment can easily be extended to any complex mechanical system simply by altering SolidWorks drawings.

Zhu Zhen, A. Al-Mamun, Myint Phone Naing

International Journal on Smart Sensing and Intelligent Systems, Volume 2 , ISSUE 2, 190–199

Article | 04-March-2018

SELF-DIAGNOSIS METHOD FOR CHECKING THE WAYSIDE SYSTEMS FOR WHEEL-RAIL VERTICAL LOAD MEASUREMENT

Nowadays, wayside measurement systems of wheel-rail contact forces have acquired great relevance for the monitoring of rolling stock, especially for freight trains. Thanks to these solutions, infrastructure managers can check and monitor the status of rolling stock and, when necessary, impose corrective actions for the railway companies. On the other hand, the evaluation of contact forces is part of the rolling stock authorisation process [1] and a mainstone for the study of the running

Daniele CORTIS, Stefano GIULIANELLI, Gabriele MALAVASI, Stefano ROSSI

Transport Problems, Volume 12 , ISSUE 4, 91–100

Research Article | 21-April-2017

The wheel-rail contact friction influence on high speed vehicle model stability

Right estimating of the coefficient of friction between the wheel and rail is essential in modelling rail vehicle dynamics. Constant value of coefficient of friction is the typical assumption in theoretical studies. But it is obvious that in real circumstances a few factors may have significant influence on the rails surface condition and this way on the coefficient of friction value. For example the weather condition, the railway location etc. Influence of the coefficient of friction changes

Mirosław DUSZA

Transport Problems, Volume 10 , ISSUE 3, 73–86

Article | 03-October-2018

INCREASING THE RESOURCE OF MILLING CUTTERS USED TO PROCESS THE LOCOMOTIVE WHEELSETS. PART 1: DETERMINATION OF CUTTING FORCES

The purpose of this work is to increase the service life of milling cutters for wheel-milling machines KJ20, and to improve the processing quality of the working surface of wheelsets of railway vehicles. Questions of operation of cylindrical cutting tools are considered, force characteristics are determined, and also analyzed their stressed state.

Aleksander SKŁADKOWSKI, Yuriy PROYDAK, Vladislav RUBAN

Transport Problems, Volume 13 , ISSUE 3, 119–130

Article | 01-September-2015

DYNAMIC PERFORMANCE INFLUENCES ON HOPF BIFURCATION CHARACTERISTICS FOR VEHICLES

studied during operation in straight track conditions with imposed high interference German track irregularity spectra with the premise of dynamic performance normalized indices processing. The study shows that: VEHICLE 1 exhibits a subcritical bifurcation characteristic under different wheel-rail matching conditions. VEHICLE 2 dynamic performance index values do not increase as speed increases, but wear index gradually increased with increased speed. Vehicles with different structural parameters

Haiyan Zhu, Pingbo Wu, Jing Zeng, Guoyao Mai

International Journal on Smart Sensing and Intelligent Systems, Volume 8 , ISSUE 3, 1786–1805

research-article | 23-April-2019

ELECTROMAGNETIC SYSTEM FOR IMPROVING THE ADHESION OF WHEELS TO RAILS

of wheels and damage to the wheels and rails [5]. The presence of a third body between wheel and rail significantly affects the adhesion. Poor adhesion of the wheels to rails can cause various problems, such as high-frequency noise [6], fatigue of the contact surface [7], increased corrugation of rails [8], energy dissipation [9], unstable adhesion before acceleration [10], and poor braking performance [11]. Traditionally, sand is used to increase the coefficient of adhesion of locomotive wheels

Yuriy OSENIN, Lidiya ANTOSHKINA, Igor SOSNOV, Evgeniy SHAPRAN, Aleksei CHESNOKOV

Transport Problems, Volume 14 , ISSUE 1, 59–67

Research Article | 27-February-2017

IMPROVEMENT OF WORKING CONDITIONS OF THE FREIGHT LOCOMOTIVE RUNNING GEAR

Summary. To improve the working conditions of the electric locomotive running part, it is necessary to decrease unsprung masses, lateral loads and the angle of attack and provide the third body with proper tribotechnical properties. A new scheme of the freight electric locomotive running gear is elaborated in the work, which ensures a decrease of unsprung masses, relative sliding of a wheel on the rail and an angle of attack that provides resistance to the destruction of the third body in the

George TUMANISHVILI, Tamaz NATRIASHVILI, Givi GOLETIANI, Victor ZVIADAURI, Tengiz NADIRADZE

Transport Problems, Volume 11 , ISSUE 3, 103–109

Article | 01-March-2015

THE BENDING MODE CONTROL METHOD OF AFS SYSTEM BASED ON PREVIEW CONTROL

Due to the time-lag of both the mechanical transmission and controller area network (CAN) bus transmission of the Adaptive Front Lighting System (AFS), the actual bending angle of AFS invariably lags behind the steering-wheel angle,which not only makes the real-time response speed of the AFS system slow, but also makes the system stability and the active safety of the vehicle poor. To solve the problem, firstly, the geometrical relations among safety braking distance and the rate of steering

Li Lifu, Yang Mingjun, Zhang Jinyong

International Journal on Smart Sensing and Intelligent Systems, Volume 8 , ISSUE 1, 637–657

Research Article | 21-April-2017

The sophisticated control of the tram bogie on track

synchronous motors and a solid axle. The wheel forces in bogie are measured by large amounts of the various sensors placed on the testing experimental tram vehicle. Nowadays the designed control algorithms are implemented to the vehicle superset control system. The traction requirements and track characteristics have an effect to these control algorithms. This control including sophisticated routing brings other improvements which is verified and corrected according to individual traction and driving

Radovan DOLECEK, Ondrej CERNY, Ivo DRAHOTSKY

Transport Problems, Volume 10 , ISSUE 3, 43–51

Article | 04-November-2019

EFFECTS OF RAIL-WHEEL PARAMETERS ON VERTICAL VIBRATIONS OF VEHICLES USING A VEHICLE–TRACK-COUPLED MODEL

Stasys STEIŠŪNAS, Gintautas BUREIKA, Mykola GORBUNOV

Transport Problems, Volume 14 , ISSUE 3, 27–40

Research Article | 24-October-2017

ENVIRONMENTAL ASSESSMENT OF ROAD TRANSPORT IN A PASSENGER CAR USING THE LIFE CYCLE APPROACH

Environmental issues are an increasingly important aspect of management in the transport sector; new methods have been developed for assessment of the environment in the transport sector using the life cycle approach. The paper presents the application of Well to Wheel (WTW) and Life Cycle Assessment (LCA) in the transport sector. The WTW method focuses on energy analysis and greenhouse gas emissions during the life cycle of fuels. WTW is used to support decision-making on the environmental

Piotr FOLĘGA, Dorota BURCHART-KOROL

Transport Problems, Volume 12 , ISSUE 2, 147–153

Article | 25-November-2017

ANALYSIS OF DYNAMICS OF AMETRO VEHICLEMODEL WITH DIFFERENTIALWHEELSETS

Summary. The operating conditions of light rail vehicles (trams, metro vehicles) are predominantly different compared with those of passenger or freight trains. The increased number of low-radii curves has a negative effect on wheel–rail interaction. The general design of light rail vehicle running gear is inherited from passenger trains and adapted to different loads. However, conventional solutions of a running gear may not provide smooth low-radius curve negotiation in all

Rafał MELNIK, Bogdan SOWIŃSKI

Transport Problems, Volume 12 , ISSUE 3, 113–124

Research Article | 21-April-2017

Study of the asynchronous traction drive's operating modes by computer simulation. Part 2: simulation results and analysis

. The description of methods applied in modeling of traction drive elements (traction motors, power converters, control systems), as well as of mechanical part and of "wheel-rail" contact, was given. In Part 2, the results of dynamic electromechanical processes modeling in various modes of electric locomotive operation (start and acceleration, traction regime in straight and curve railway sections, wheel-slide protection, etc.) are presented. In perspective, based on the developed model, the

Pavel KOLPAHCHYAN, Alexander ZARIFYAN Jr

Transport Problems, Volume 10 , ISSUE 3, 5–15

Research Article | 21-April-2017

Study of the asynchronous traction drive's operating modes by computer simulation. Part 1: Problem formulation and computer model

at the realization of various control algorithms must be obtained. Another objective is to research the dynamic processes in various modes of the electric locomotive operation (start and acceleration, traction regime, coasting movement, wheel-slide protection, etc). To solve these problems, a complex computer model based on the representation of AC traction drive as controlled electromechanical system, is developed in Part 1. The description of methods applied in modeling of traction drive

Pavel KOLPAHCHYAN, Alexander ZARIFYAN Jr

Transport Problems, Volume 10 , ISSUE 2, 125–136

Article | 08-December-2019

PARALLEL COMPUTATIONS AND CO-SIMULATION IN UNIVERSAL MECHANISM SOFTWARE. PART II: EXAMPLES

The second part of the paper continues a discussion on the topic of parallel computations in railway dynamics. The algorithms described in the first part of the paper are applied to parallel simulation on computers with multicore processors of six different models of rail vehicles and trains with the number of degrees of freedom from about one hundred to more than 20 thousands. A considerable simulation speedup is reported. In addition, an example of evaluation of wheel profile wear on

Dmitry POGORELOV, Alexander RODIKOV, Roman KOVALEV

Transport Problems, Volume 14 , ISSUE 4, 31–38

Article | 24-November-2017

POSSIBILITIES OF INCREASING THE DURABILITY OF CHAIN WHEELS OF ARMOURED-FACE CONVEYORS

Andrzej N. WIECZOREK

Transport Problems, Volume 12 , ISSUE 3, 71–82

Research Article | 23-October-2017

OPTIMUM DISTRIBUTION OF REPAIRS IN ТS-8 OF ELECTRIC LOCOMOTIVES VL80С BETWEEN REPAIR DEPOTS IN THE REPUBLIC OF KAZAKHSTAN

for repairs by optimization of a resource before change of wheel bandages in electric locomotives VL80С that promotes an increase in their between-repairs run.

Seidulla ABDULLAYEV, Janat MUSAYEV, Temyrbay CHIGAMBAEV, Saken MALYBAYEV, Gabit BAKYT, Assylbek TOILYBAYEV

Transport Problems, Volume 12 , ISSUE 2, 19–29

Article | 04-November-2019

PARALLEL COMPUTATIONS AND CO-SIMULATION IN UNIVERSAL MECHANISM SOFTWARE. PART I: ALGORITHMS AND IMPLEMENTATION

Parallel computations speed up simulation of multibody system dynamics, in particular, dynamics of railway vehicles and trains. It is important for reduction of required time at the stage of new railway vehicle design, for increase of complexity of studied problems and for real-time applications. We consider realization of parallel computations in Universal Mechanism software in three different areas: simulation of rail vehicle and train dynamics, evaluation of wheel profile wear and multi

Dmitry POGORELOV, Alexander RODIKOV, Roman KOVALEV

Transport Problems, Volume 14 , ISSUE 3, 163–175

Research Article | 23-October-2017

GEOMETRIC ANALYSIS OF MANEUVERABILITY PERFORMANCE FOR VEHICLES WITH TWO STEERING AXLES

basis of which wheel-steering angles are specified. As a result, it was possible to create a 3D model to simulate the actual operation of the steering system. This made it possible to compare the theoretical approach with the actual system design.

Jędrzej PILISIEWICZ, Roman KACZYŃSKI

Transport Problems, Volume 12 , ISSUE 2, 13–52

Article | 01-September-2015

RESEARCH ON POWER CHARACTERISTIC OF THE ELECTRIC FORKLIFT EPS SYSTEM

This paper has given the structure, operating principle, and force analysis of electric power steering (EPS) system aimed at a type of forklift. Combing with forklift operating characteristic, three variable power characteristics curve based on steering wheel torque, real-time speed, and load is designed, so is the three dimensional diagram of forklift power gradient by using fuzzy rule. The dynamic model of EPS system and two-degree-of-freedom linear model of forklift dynamics are established

Yan He, Benxian Xiao

International Journal on Smart Sensing and Intelligent Systems, Volume 8 , ISSUE 3, 1768–1785

Article | 03-October-2018

SOME GUIDANCE IN THE DESIGNING OF A ROLLER FOR THE AUTOMOTIVE TESTERS

This work presents some aspects related to the designing of a roller for stands that are intended to determine the parameters of the transmission of a vehicle, such as braking force, wheel revolutions, etc. The computational scheme of simply supported beam is used to create an analytical mechanical-mathematical model through which a multicriteria optimization problem has been solved. A finite element macro and submodel of the roller has been created, and by using the R1MS technique, the fatigue

Yulian ANGELOV, Ivo DRAGANOV

Transport Problems, Volume 13 , ISSUE 3, 97–108

Article | 15-March-2021

MODIFICATION OF THE ADHESIVE FORCE BY CHANGING THE RADIAL REACTION ON VEHICLE WHEELS

Petr JILEK, Jan KRMELA, Jan BERG

Transport Problems, Volume 16 , ISSUE 1, 179–186

Article | 10-April-2018

Optimization of Matching on Torque Converter with Engine Based on Improved Radar Chart Method

Zhenbao Wang, Sicheng Qin

International Journal of Advanced Network, Monitoring and Controls, Volume 2 , ISSUE 4, 76–79

Article | 31-July-2018

RESEARCH AND DEVELOPMENT OF AN ELECTRIC TRACTION DRIVE BASED ON A SWITCHED RELUCTANCE MOTOR

both freight and passenger rolling stock. Our research is directed to develop a control system for a four-phase SRM. The procedure of fuzzy-regulator synthesis is presented. A physical model of a switched reluctance drive is created, namely, it is a system of a wheel set and a motor. The efficiency of the control system with different types of speed regulators was checked and their main quality indicators were determined. According to the results of the analysis, it was found that the fuzzy

Serhii Buriakovskyi, Artem Maslii, Olga Pasko, Ihor Denys

Transport Problems, Volume 13 , ISSUE 2, 69–79

Research Article | 24-October-2017

APPLICATION OF TRIBOLOGY THEORETICAL BASES FOR WORKING OUT OF RESOURCE-SAVING SYSTEMS ON RAILWAY TRANSPORTATION

Vladimir SHAPOVALOV, Alexander LUBYAGOV, Pavel KHARLAMOV

Transport Problems, Volume 12 , ISSUE 2, 137–146

research-article | 06-April-2020

Moderate exercise prevents the cell atrophy caused by hypothyroidism in rats

single-session memory phase, 2 days apart. Rats were then sacrificed by intracardial perfusion to obtain the brains. Simultaneously to the antithyroid treatment a group of each thyroid condition was subjected to a forced exercise routine, walking for 30 min/day beginning three hours after lights off, in a motorized wheel (Omnialva, Mexico) daily five days a week (Monday to Friday). The speed was set at 5 m/min, which corresponds to a moderate exercise protocol that does not increase lactate and

Carmen Martínez-Salazar, Iván Villanueva, Jorge Pacheco-Rosado, Claudia Alva-Sánchez

Acta Neurobiologiae Experimentalis, Volume 80 , ISSUE 1, 47–56

Article | 26-May-2019

AN APPLICATION OF FUNCTIONAL DATA ANALYSIS TO LOCAL DAMAGE DETECTION

of the covariance operator describing the signal. We will also propose a new technique based on the bootstrap resampling to choose the optimal dimension inrepresenting big data sets that we process. Using real data generated by a gearbox and a wheel bearings we will show how these techniques work in practice.

Jacek Leśkow, Maria Skupień

Statistics in Transition New Series, Volume 20 , ISSUE 1, 131–151

Research paper | 04-May-2018

Effects of different delayed exercise regimens on cognitive performance in fimbria-fornix transected rats

Studies have shown that exercise can positively influence cognitive performance after brain injury. This study investigated the effects of different exercise regimens on allocentric place learning after fimbria-fornix (FF) transection. One hundred and sixteen pre-shaped rats were subjected either to a mechanical transection of the FF or control sham surgery and divided into following groups: i) no exercise (NE), ii) voluntary exercise in a running wheel (RW), iii) forced swimming exercise

Elise Wogensen, Linda Marschner, Marie Gajhede Gram, Siri Mehlsen, Valdemar H. B. Uhre, Pernille Bülow, Jesper Mogensen, Hana Malá

Acta Neurobiologiae Experimentalis, Volume 77 , ISSUE 4, 323–336

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