Determining strength indicators for the bearing structure of a covered wagon's body made from round pipes when transported by a railroad ferry
Journal Title: Восточно-Европейский журнал передовых технологий - Year 2019, Vol 1, Issue 7
Abstract
Improving the efficiency of transportation process through international transport corridors promotes the development of interoperable systems. Successful functioning of the interoperability of transportation is possible at reliable and well-coordinated work of individual components. In this regard, it is necessary to introduce into service a new generation of rolling stock with improved techno-economic and performance indicators. We have designed a supporting structure of the covered wagon, whose special feature is that the elements of the body are made of round tubes; in order to ensure the reliability of its fastening to the deck of a rail ferry, the nodes for fastening chain couplers are arranged at the pivot beams. To refine the determination of indicators for the strength of the body of a covered wagon, we have investigated its dynamic loading under the most unfavorable estimation scheme ‒ angular displacements of the railroad ferry relative to its longitudinal axis (equivalent to lateral pitching oscillations in the dynamics of railroad cars). We have determined the maximum magnitude of accelerations using mathematical modeling of a railroad ferry oscillations with wagons placed on its decks, applying a second-order Lagrange method. Solving differential equations of a railroad ferry oscillations, with railroad cars on it, employed the Runge-Kutta method in the programming environment MathCad. When determining the total magnitude of acceleration acting on the body of a covered wagon when transported by a railroad ferry, we also accounted for the horizontal component of a free fall acceleration, predetermined by the tilt angle (heeling) of the railroad ferry. The resulting value for acceleration as a component of dynamic loading was taken into account while studying the strength of a load-bearing bodywork of the covered wagon. The calculation employed a finite element method in the programming environment CosmosWorks. To this end, we developed a model of strength of a load-bearing bodywork of the covered wagon made from round tubes when transported by a railroad ferry. It has been established that the maximum equivalent stresses do not exceed those permissible for the grade of steel used for metallic structures of the body and are about 280 MPa. We have determined a design service life of the node for fastening chain screeds at the body of a covered wagon when transported by a railroad ferry. Results of this research could be applied when designing railroad cars of the new generation with improved technoeconomic and performance indicators
Authors and Affiliations
Oleksij Fomin, Alyona Lovska, Vyacheslav Masliyev, Alina Tsymbaliuk, Oleksii Burlutski
Keywords
Related Articles
- EP ID EP666205
- DOI 10.15587/1729-4061.2019.154282
- Views 87
- Downloads 0
Examining the effect of production conditions at territorial logistic systems of milk harvesting on the parameters of a fleet of specialized road tanks
<p class="a"><span lang="EN-US">We have studied the influence of changing production conditions and components of transportation processes on the need in specialized vehicles in the milk harvesting systems. Based on the...
Organized management of decentralized economic production systems with joint implementation of development projects
<p>Since integration and cooperation of enterprises have become important preconditions for the success of their operation, the organization of management of integrated economic production systems must thus take into acc...
Construction of algorithms to automatically determine individual indicators when assessing the shape quality of cross-wound packages
<p>The paper addresses issues related to the selection of individual indicators to estimate the shape quality of cross-wound packages, as well as the construction of algorithms to determine them automatically.</p><p>We h...
Modeling the parallelism of empirical models of optimal complexity using a Petri net
<p>Many physical processes and phenomena in view of their complexity cannot be described analytically. In these cases, empirical modeling is applied. In this research, the method based on the genetic approach is used to...
Studying and designing improved coatings for labyrinth seals of gasturbine engine turbines
<p>An analysis of improving efficiency of aircraft engine turbines by means of improvement of composition of sealing coatings used in labyrinth seals was made. It was established that a number of contradictory requiremen...