Добірка наукової літератури з теми "Platform wagon"

The aim of the article is to present the structural design of freight railway wagon with variable use of loading space with regard to the safe operation and assessment of the properties by the calculation methods of simulation analysis. Virtual model of wagon was created in a computer program PTC/Creo. After creating the construction, the calculation model of the wagon frame was subjected to the static and dynamic analysis in programs ANSYS and ADAMS/Rail. On the basis of computer aided simulation analysis was optimized the chassis frame of the wagon. This wagon will be able to offer even more capacity and utilize less resources and energy than current wagons for intermodal transport.

Abstract A special wagon, presented in the paper, can be used for intermodal transport of various types of vehicles. It enables transport of vehicles of 36 tons mass and height of 4m on the GB1 clearance height. An innovative wagon is equipped with a frame-support with marginal parts mounted on standard biaxial bogies and the central part lowered with a rotatable loading platform. The rotating part of wagon acts as a kind of platform, allowing truck to move through it during load/unload. During railway operation, this rotating platform is to become an integrated part of the wagon; the tailboards of the rotating part will be connected to the over-bogie part with the special locks. A unique concept of the wagon structure forced a design approach which was rather unusual for the rail industry. Since the design team aimed at very challenging demands of GB1 envelope and usage of standard bogies, the layout of the wagon had to be thoroughly examined in terms of its overall stiffness. Every major design change had to be simulated in order to accurately predict its influence on the whole wagon structure. FE analysis was used for numerical tests of such a wagon structure in different configurations. The calculations were carried out on the basis of PN-EN standards. Selected results of numerical tests of the prototype version of a such wagon for intermodal transports were presented in the paper.

The paper presents a pilot analysis of the dynamics of a railway wagon designed for transporting road semi-trailer trucks. Attention was given to the innovative solution of the wagon construction, having a movable platform enabling transportation of road vehicles as a part of intermodal transport. The technical description presented in the article takes into account the provisions of Patent No. 214797, for the invention under the name "Railway transport wagon, railway transport unit and railway transport system containing such wagon". The work presents the concept of technical characteristics of the wagon construction solution and a simulation model was built using in-house software. The technical parameters were analyzed, followed by pilot simulation tests. This paper presents the results of research on the dynamics of the platform wagon, loaded with a typical road semi-trailer truck. The system's eigenvalues were analyzed, allowing for the initial assessment of dynamic phenomena occurring in the conditions of exploitation of the loaded wagon. The tests are of pilot nature and constitute a prelude to carry out complex simulation analyzes including tests of dynamics while running on transition curves, arcs, and wear of the rolling surfaces of wheels and rails at different traffic speeds.

In the article the results of studies of loading of the bearing structure of a wagon-platform of an articulated type, created on the basis of the existing construction, during transportation on the railway ferry by sea are given. In order to ensure the reliability of the fixing of the bearing structure of the wagon-platform of the articulated type relative to the deck of the railway ferry, it is proposed to equip it with knots for fixing the chain ties. To study the dynamic loading of a wagon-platform of an articulated type during transportation on a railway ferry by sea, constructed a mathematical model of oscillations with angular displacements relative to the longitudinal axis of the vessel (loll/heel). The maximal values of accelerations, as components of dynamic load, acting on the bearing structure of a wagon-platform are determined. The obtained acceleration values are taken into account when calculating the strength of the bearing structure using the finite element method implemented in the CosmosWorks software environment. It is established that the maximum equivalent tension do not exceed permissible values. The carried out researches will promote increase of efficiency of combined transportations in the direction of the international transport corridors.

This article presents an efficient methodology for the calibration of a numerical model of a Sgnss freight railway wagon based on experimental modal parameters, namely natural frequencies and mode shapes. Dynamic tests were performed for two distinct static loading configurations, tare weight and current operational overload, under demanding test conditions, particularly during an unloading operation of the train and without disturbing its tight operational schedule. These conditions impose restrictions to the tests, especially regarding the test duration, sensor positioning and system excitation. The experimental setups involve the use of several high-sensitivity accelerometers strategically distributed along with the vehicle platform and bogies in the vertical direction. The modal identification was performed with the application of the enhanced frequency-domain decomposition (EFDD) method, allowing the estimation of 10 natural frequencies and mode shapes associated with structural movements of the wagon platform, which in some cases are coupled with rigid body movements. A detailed 3D FE model of the freight wagon was developed including the platform, bogies, wheelsets, primary suspensions and wheel–rail interface. The model calibration was performed sequentially, first with the unloaded wagon model and then with the loaded wagon model, resorting to an iterative method based on a genetic algorithm. The calibration process allowed the obtainment of the optimal values of eight numerical parameters, including a double estimation of the vertical stiffness of the primary suspensions under the unloaded and loaded static configurations. The results demonstrate that the primary suspensions present an elastic/almost elastic behaviour. The comparison of experimental and numerical responses before and after calibration revealed significant improvements in the numerical models and a very good correlation between the experimental and numerical responses after calibration.

Operating in a dynamic and competitive global market, railway companies have realized many years ago that better management of their logistical operations will enhance their strategic positions on the market. The financial component of daily operations is of utmost importance these days and many companies concluded that maximizing the profit relies on the integration of logistical activities with better income management. This paper presents a system consisting of three components: Ferodata BOX, Ferodata MOBILE, and Ferodata SYS, used to transmit to a web-server the status and operating information of an electric or diesel train. Train information includes data from locomotives, wagons, train driver, route, direction, fuel or electric consumption, speed, etc. All this information is processed in real-time and can be viewed in the web-server application. Additionally, the web-server application could manage and report details that are coming from the wagons, such as valuable information regarding the bogie wear, the identification of the wagons attached to a gasket, and identification the situations in which a wagon or group of wagons comes off the gasket configuration. All information about the status of trains is available on-line and at any moment the person responsible for management can use these data in their work.

Implementation of the Industry 4.0 concept is considered in the context of automation of railway transport. The analysis refers to prerequisites for creation of a universal digital platform integrating automation systems at a marshalling yard.The example of JSC Russian Railways has contributed to describe the main goals of Digital Station concept, aimed at fusion of data from low-level local automation equipment. The presented functionality of the system for control and processing information on movements of wagons and locomotives at the station in real time (SCPI MWL RT) implements the set goals by integrating initial data from all automation and centralised traffic control systems operating at the station, checking it for consistency, eliminating information redundancy and generating in real time the current model of a marshalling yard regarding trains and wagons and based on data «from the wheel».Description of the existing functionality of SCPI MWL RT, implemented at a facility, is followed by the analysis of the advantages of this system for the railway cargo transportation network. The objective of the paper is to present some previously unpublished technical solutions for implementation of the specified functionality. The methods of the research are based on fusion of heterogeneous data received from floor devices, specialised video cameras, as well as from real-time wagon positioning models.It is shown that adoption of new technical solutions for SCPI MWL RT will allow to considerably improve the quality of planning of technological process of classifying railway wagons and of forecasting the need for infrastructure maintenance. Deep learning algorithms presented ensure functioning of the developed solutions in real time with high accuracy. Further steps described refer to implementation of a digital platform in the form of a digital twin of a marshalling yard, creating thus a prerequisite for development of an intelligent automatic machine to control the marshalling yard, as well as for further planned ways to implementation there-of.

The study deals with a shunting impact of 13-4085 wagon platform to a TK25 tank container. In order to define the loads acting on the container frame, 3D computer models of the 1СС size container is designed, both version – for liquid and dry material transport. The virtual model consider a longitudinal force from the wagon automatic coupling, vertical and horizontal forces from the wagon – containers interaction and also vertical forces of the container fittings. For checking adequacy of the created models, the container acceleration values was obtained in two scenarios. In the first case, when fittings are aligned relative to the fitting spots of a wagon, thus without possibility of relative movement. In the second case, movement within clearance of fitting spots is possible. Mathematical models of dynamic loads on these structures were solved by MathCad. Differential equations were solved by the Runge – Kutta method. Adequacy of the created models was checked with an F-test. On the basis of conducted calculation can be conclude that the hypothesis on the adequacy of the models was not rejected.

Дисертація на здобуття наукового ступеня кандидата технічних наук (доктора філософії) за спеціальністю 05.02.09 "Динаміка та міцність машин" (13 – Механічна інженерія). – Національний технічний університет «Харківський політехнічний інститут», Харків, 2019. Потреби сучасної промисловості, транспорту і сфери послуг у інноваційних виробах із підвищеними техніко-економічними характеристиками останнім часом різко зростають. При цьому велику частку серед такої продукції займають тонкостінні машинобудівні конструкції, у яких раціонально поєднуються масові і характеристики міцності. У той же час на багато виробів (літаки, судна, рухомий склад залізниць, крани, перевантажувачі, ємності високого тиску, апарати хімічної промисловості, устаткування агропромислового комплексу) поширюються суворі офіційні правила і норми, спрямовані, у першу чергу, на забезпечення безпеки експлуатації. Відповідно, при проектних дослідженнях використовуються усталені методики розрахунку, а також традиційні технічні рішення. Незважаючи на тиск сталої практики, що схиляється до створення виробів у вигляді «клонів» давно створених аналогів, діє також протилежна тенденція. Вона породжується загальним прагненням до прогресу, навіть у консервативних областях діяльності, а також економічними міркуваннями. Більш того, багато споживачів інноваційних виробів установлюють свої додаткові вимоги до продукції, що спрямовані на продовження терміну служби конструкцій, підвищення їхньої продуктивності, інтенсивності експлуатаційних режимів або навантажувальної здатності. У цих обставинах, окрім нормативних обмежень, з’являються додаткові, що ускладнює виконання вимог до проектованих конструкцій. Таким чином, виникла і посилюється у своїй актуальності та важливості науково-практична задача розробки методів забезпечення міцності інноваційних тонкостінних машинобудівних конструкцій при дії комплексу експлуатаційних навантажень. Її постановка, розв’язання та впровадження у практику проектних досліджень склала мету, зміст і напрями дисертаційних досліджень. У дисертаційній роботі розв’язана науково-технічна задача, яка полягає в удосконалення методів і моделей для проектного забезпечення міцності тонкостінних машинобудівних конструкцій при дії комплексу експлуатаційних навантажень. У роботі для аналізу напружено-деформованого стану тонкостінних машинобудівних конструкцій застосовуються співвідношення теорії пружності і методу скінченних елементів. Формування геометричної форми досліджуваних конструкцій здійснювалося методами твердотільного і поверхневого моделювання. Для варіативної зміни структури і розмірів досліджуваних об’єктів адаптовано і розвинено метод узагальненого параметричного моделювання стосовно інноваційних тонкостінних машинобудівних конструкцій. Експериментальні дослідження здійснювалися методами тензометрії та акселерометрії. У ході виконання дисертаційного дослідження отримано наступні наукові результати: 1) проведено аналіз умов експлуатації, нормативних вимог, а також методів розрахунку тонкостінних машинобудівних конструкцій з урахуванням обмежень на міцність, і на цій основі визначені напрями дисертаційних досліджень; 2) удосконалено методи і моделі для обґрунтування проектних параметрів інноваційних тонкостінних машинобудівних конструкцій за критеріями міцності при дії комплексу експлуатаційних навантажень із урахуванням нормативних обмежень; 3) здійснено розв’язання низки прикладних задач проектного обґрунтування технічних рішень для тонкостінних машинобудівних конструкцій за критеріями міцності та довговічності; 4) здійснено розрахунково-експериментальні дослідження напружено- деформованого стану інноваційних тонкостінних машинобудівних конструкцій, які спроектовано на основі рекомендацій із застосуванням результатів дисертаційних досліджень; 5) впроваджено результати досліджень у виробництво.
Тhesis for candidate of technical science degree (Philosophy Doctor) in speciality 05.02.09 – Dynamics and Strength of Machines (13 – mechanical engineering). – National Тechnical University «Kharkov Polytechnic Institute», Kharkiv, 2019. The needs of modern industry, transport and services in innovative products with increased technical and economic characteristics have recently been increasing dramatically. Large proportion of such products are thin-walled engineering structures, which rationally combine mass and strength characteristics. At the same time, strict rules and regulations are applied to many products (aircraft, ships, rolling stock, cranes, reloaders, high-pressure vessels, chemical industry equipment, agricultural equipment) for ensure the operation safety. Accordingly, design studies use established computational methods, as well as traditional technical solutions. In spite of pressure of established practice, which tends to create products as "clones" of long-created analogues, opposite trend also applies. It is generated by general aspiration for progress, even in conservative areas of activity, as well as economic considerations. Moreover, many consumers of innovative products set their additional requirements for products aimed at extending service life of structures, increasing their productivity, intensity of operating modes or load capacity. In these circumstances, in addition to regulatory restrictions, there are additional ones, which complicates the requirements fulfillment for projected designs. Thus, the scientific and practical task of developing methods for strength ensuring of innovative thin-walled engineering structures under action of operating loads complex has appeared and is intensified in its urgency and importance. Its formulation, solution and implementation to design studies practice is goal, content and directions of dissertation research. In the dissertation work the scientific and technical problem is solved, which consists in methods and models improvement for strength ensurance of thin-walled engineering structures under action of operational loads complex. In the work for stress-strain state analysis of thin-walled engineering structures the theory of elasticity ratios and the finite element method are used. Geometric shape formation of investigated structures was carried out by methods of solid state and surface modeling. For structure and size variation of studied objects, the method of generalized parametric modeling for innovative thin-walled engineering structures is adapted and developed. Experimental studies were carried out using strain gauge and accelerometer methods. In course of dissertation research the following scientific results were obtained: 1) an analysis of operating conditions, regulatory requirements, as well as analysis methods of thin-walled engineering structures taking into account the constrains on durability, and on this basis, the dissertation research directions were determined; 2) methods and models for design parameters justification of innovative thin-walled engineering structures according to strength criteria under action of operational loads complex, taking into account regulatory constraints are improved; 3) solution of a number of applied tasks of technical solutions substantiation for the thin-walled engineering structures according to strength and durability criteria; 4) computational and experimental studies of stress-strain state of innovative thin-walled engineering structures that are designed on the basis of recommendations with application of dissertation research results; 5) research results are introduced into production.

Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.02.09 – динаміка таміцність машин. Національний технічний університет «Харківський політехнічний інститут», Міністерство освіти і науки України, Харків, 2019. Дисертація присвячена удосконаленню методів і моделей для проектного забезпечення міцності тонкостінних машинобудівних конструкцій при дії комплексу експлуатаційних навантажень. Обґрунтування раціональних параметрів і конструктивних рішень ТСМБК здійснюється за критеріями мінімізації маси, зниження напружень, підвищення терміну експлуатації. Ураховуються апроксимації залежностей критеріальних величин, що поступово локалізуються, від варійованих параметрів. Узагальненими параметрами виступають структура, проектно-технологічні рішення ТСМБК, конструктивні параметри і експлуатаційні режими. При цьому забезпечується розв’язання задач одиничного аналізу, багатоваріантних досліджень, а також обґрунтування раціональних проектно-технологічних рішень. На розвиток відомих підходів розглянуті наступні узагальнення: уніфікація, доцільність, ефективності, ідентифікація навантажень, верифікація, прогнозування, відлаштування. Здійснена також алгоритмізація запропонованих методів розрахунку НДС тонкостінних машинобудівних конструкцій на основі поєднання переваг універсальних і спеціальних систем. Проведено розв’язання низки прикладних задач. Обґрунтовано раціональні проектні параметри інноваційних ТСМБК. Представлено результати експериментальних досліджень інноваційних вагону-цистерни, вагону-платформи і крана-перевантажувача, які спроектовано і виготовлено на основі впровадження рекомендацій за підсумками дисертаційних досліджень.
Thesis for the degree of Candidate of Technical Sciences in specialty 05.02.09 – Dynamics and strength of machines. National Technical University «Kharkiv Polytechnic Institute», Ministry of Education and Science of Ukraine, Kharkiv, 2019. The thesis is devoted to the improvement of methods and models for the design ensuring of the strength of thin-walled engineering structures under the action of operational loadings complex. The justification for rational parameters and design solutions for thin-walled engineering structures is carried out according to the criteria of mass minimizing, stresses reducing, and service life increasing. Various additional criteria such as cost, manufacturability, economy, energy efficiency, can be taken into account in the formation of the quality function. The dependences approximations of criterion values, which are gradually localized, from variable parameters are taken into account. The structure, design and technological solutions of thin-walled engineering structures, structural parameters and operating modes are the generalized parameters. This provides a solution to the problems of a single analysis, multivariate studies, as well as the justification for rational design and technological solutions. The following generalizations are considered: unification, expediency, efficiency, loading identification, verification, forecasting, tune-up in development of known approach. The algorithmization of proposed methods for calculating of the stress strain state of thin-walled engineering structures has also been carried out based on a combination of the advantages of universal and special systems. A number of applied problems are solved. Parametric finite element models of researched objects have been developed based on a set of studies of the stress-strain state of the power elements. The rational design parameters of innovative thin-walled engineering structures are determined. The results of experimental studies of innovative tank cars, platform cars and loading cranes, which are designed and manufactured based on the implementation of recommendations from dissertation research, are presented. Comparative experimental and computational studies of the structures stress-strain state were carried out. They are combined with certification tests, during which the stresses in the power elements were recorded. The operational loadings are determined which are acting on thin-walled structures. During the tests, regularities were established that determine the dependence of the loadings components on the structure from various factors. Verification of the numerical models parameters of thin-walled engineering constructions elements was carried out. Designed on the basis of researches innovative structures have improved technical and economic characteristics compared with similar ones.

Emerging wireless sensor networking (WSN) and modern machine learning techniques have encouraged interest in the development of vehicle health monitoring (VHM) systems that ensure secure and reliable operation of the rail vehicle. The performance of rail vehicles running on railway tracks is governed by the dynamic behaviours of railway bogies especially in the cases of lateral instability and track irregularities. In order to ensure safety and reliability of railway in this chapter, a forecasting model has been developed to investigate vertical acceleration behaviour of railway wagons attached to a moving locomotive using modern machine learning techniques. Initially, an energy-efficient data acquisition model has been proposed for WSN applications using popular learning algorithms. Later, a prediction model has been developed to investigate both front and rear body vertical acceleration behaviour. Different types of models can be built using a uniform platform to evaluate their performances and estimate different attributes’ correlation coefficient (CC), root mean square error (RMSE), mean absolute error (MAE), root relative squared error (RRSE), relative absolute error (RAE) and computation complexity for each of the algorithm. Finally, spectral analysis of front and rear body vertical condition is produced from the predicted data using Fast Fourier Transform (FFT) and used to generate precautionary signals and system status which can be used by the locomotive driver for deciding upon necessary actions.

Emerging wireless sensor networking (WSN) and modern machine learning techniques have encouraged interest in the development of vehicle health monitoring (VHM) systems that ensure secure and reliable operation of the rail vehicle. The performance of rail vehicles running on railway tracks is governed by the dynamic behaviours of railway bogies especially in the cases of lateral instability and track irregularities. In order to ensure safety and reliability of railway in this chapter, a forecasting model has been developed to investigate vertical acceleration behaviour of railway wagons attached to a moving locomotive using modern machine learning techniques. Initially, an energy-efficient data acquisition model has been proposed for WSN applications using popular learning algorithms. Later, a prediction model has been developed to investigate both front and rear body vertical acceleration behaviour. Different types of models can be built using a uniform platform to evaluate their performances and estimate different attributes’ correlation coefficient (CC), root mean square error (RMSE), mean absolute error (MAE), root relative squared error (RRSE), relative absolute error (RAE) and computation complexity for each of the algorithm. Finally, spectral analysis of front and rear body vertical condition is produced from the predicted data using Fast Fourier Transform (FFT) and used to generate precautionary signals and system status which can be used by the locomotive driver for deciding upon necessary actions.

Abstract As part of Milwaukee School of Engineering’s (MSOE) 2019 Senior Design program, a design team has worked with Old World Wisconsin (OWW) — a museum in Waukesha County — to incorporate STEM education into their historical platform. This involved introducing methods to teach STEM concepts to visitors, most of which are school children in the K-12 system. Background research on current Science, Technology, Engineering and Mathematics (STEM) methods for K-12 audiences show that there is an overall lack of STEM introduction for students in the United States, and as such, students in the U.S. fail to meet averages for international testing standards for STEM concepts. Research shows that young students require hands on programs in which they can form hypotheses, test hypotheses, and question how these concepts can be applied to real life scenarios. The physical designs in this project consist of stations which relate to OWW’s current exhibits, and introduce statics and dynamics concepts, such as the concepts of mechanical advantage. These concepts are introduced through physical mechanisms that visitors to OWW can interact with in a safe manner, without the need of close supervision. With the guidance of facilitators, school children on field trips will learn mechanics concepts in a tactile and visual manner while being taught key points by the facilitator. The physical designs in this project exist in OWW’s Bicycle Shop, Peterson Wagon Shop, and Loomer Barn. The bicycle shop station consists of a sprocket and chain setup in which visitors can drive a sprocket using a handle, to discover how gear ratios can affect output speeds and torque for a given input speed and torque. The station in the wagon shop has a table with multiple tracks on which a scale wheel can be rolled, to show the relationships between translational and rotational dynamics. In the Loomer Barn, there is a lever station which shows the concepts of moments and moment arms, as well as mechanical advantage, which visitors can solve problems with to understand the relationship between moment arms, and the applied forces required to balance a lever. Also in the barn, a pulley station explores the use of multiple pulleys to make lifting require less force, while increasing the required pulling distances. Each station is accompanied by worksheets that can be distributed to teachers and other visitors via e-mail, which will serve as further supplementary learning tools to enhance visitors’ understanding of the subject material. Design specifications are defined for the size, weight, and types of components to be allowed in the wagon and sprocket modules. These design specifications are met by the finalized designs. The separate stations have undergone some revision over time through different design prototype phases. In the prototype phases, 3D printing was the main means of design, but since these devices are meant to be large and sturdy to offer permanent visual cues to young students, these prototypes were not only temporary solutions, but impossible to 3D print or manufacture within a reasonable cost and time frame. Because of this, the use of externally sourced parts from McMaster-Carr and Menards was decided upon to fulfill the goals of this project. This project was feasible in that it was accomplished by meeting standards related to the background research on STEM education, as well as falling within the realm of historical relevance to OWW’s exhibits. The project was assembled and distributed to OWW within the desired time-frame of both MSOE, and OWW.