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Statistical Analysis Of Wheel Derailment Probability Based On The Derailment Coefficient
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Book Synopsis Statistical Analysis of Wheel Derailment Probability Based on the Derailment Coefficient by : Dale B. Cherchas
Download or read book Statistical Analysis of Wheel Derailment Probability Based on the Derailment Coefficient written by Dale B. Cherchas and published by . This book was released on 1980 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual Report by : Joint Program in Transportation
Download or read book Annual Report written by Joint Program in Transportation and published by . This book was released on 1984 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study on Reducing Derailments at Turnout by : Ali Alsahli
Download or read book A Study on Reducing Derailments at Turnout written by Ali Alsahli and published by . This book was released on 2016 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The provision of a reliable railway system is necessary since the railway system is a transportation mode that communities depend on for freight and passenger purposes. Cost-effective maintenance methods are one of the traits of a reliable railway system. One of the major causes of accidents in the US railroad system is derailment. Derailment is the incident where the train wheels leave the rails and wheel climb is one of the common wheel climb reasons. Turnouts notably are one of the track areas where a significant number of derailments occurs. ☐ This research focuses on the evaluation of newly developed inspection gauges to reduce derailments at turnouts. As part of the review of the evaluated gauges, IDEA S-23 project, which is a Transportation Research Board project and a master thesis, was reviewed. Four gauges that were developed in this project are considered in this thesis. The four gauges are as follows: 1. Chipped point gauge 2. AAR 1B wheel contact gauge 3. Severely worn wheel profile gauge 4. Gage-face wear angle gauge. ☐ In this study, a discussion of the causes of derailments in general and wheel climb specifically is presented. This study used a methodology that has been proposed by a previous study1, where data taken from an Automated Switch Inspection Vehicle (ASIV) were utilized to overlay switch point profiles with wheels to determine critical points at turnouts. This method is used in this thesis to overlay the evaluated gauges with the switch point profile and then compare the results in terms of Lateral force (L)/Vertical force (V). ☐ As part of the evaluation, four gauges were selected on the basis of the results of IDEA S-23 as grounds for the field validation process. The field validation was completed as part of the IDEA S-28 project and this thesis. The discussion of the field evaluation process and the analysis made on the data obtained from the field evaluation are presented in this thesis. This thesis introduces two types of analysis, namely, agreement analysis and decision tree analysis, which are based on the data mining technique. As a result, the evaluation of the proposed gauges in terms of L/V and based on the IDEA S-28 analysis is presented. ☐ Moreover, the recommendation and modification of the gauges are presented.
Book Synopsis Journal of Dynamic Systems, Measurement, and Control by :
Download or read book Journal of Dynamic Systems, Measurement, and Control written by and published by . This book was released on 1982 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publishes theoretical and applied original papers in dynamic systems. Theoretical papers present new theoretical developments and knowledge for controls of dynamical systems together with clear engineering motivation for the new theory. Applied papers include modeling, simulation, and corroboration of theory with emphasis on demonstrated practicality.
Download or read book Canadiana written by and published by . This book was released on 1982 with total page 1810 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantitative Analyses of Train Derailment Probability at Highway-rail Grade Crossings by : Samantha Chadwick
Download or read book Quantitative Analyses of Train Derailment Probability at Highway-rail Grade Crossings written by Samantha Chadwick and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Dynamics of Vehicles on Roads by : A.H. Wickens
Download or read book The Dynamics of Vehicles on Roads written by A.H. Wickens and published by Routledge. This book was released on 2018-05-08 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1982. CRC Press is an imprint of Taylor & Francis.
Download or read book Canadian Books in Print written by and published by . This book was released on 1983 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Derailment Risk Assessment by : Simon Wagner
Download or read book Derailment Risk Assessment written by Simon Wagner and published by . This book was released on 2004 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: "There is a large quantity of literature available on longitudinal train dynamics and risk assessment but nothing that combines these two topics. This thesis is focused at assessing derailment risks developed due to longitudinal train dynamics. A key focus of this thesis is to identify strategies that can be field implemented to correctly manage these risks. This thesis quantifies derailment risk and allows a datum for comparison. A derailment risk assessment on longitudinal train dynamics was studied for a 107 vehicle train consist travelling along the Monto and North Coast Lines in Queensland, Australia. The train consisted of 103 wagons and 4 locomotives with locomotives positioned in groups of two in lead and mid train positions. The wagons were empty hopper wagons on a track gauge of 1067mm. The scenarios studied include: the effect of longitudinal impacts on wagon dynamics in transition curves; and the effects of longitudinal steady forces on wagon dynamics on curves. Simulation software packages VAMPIRE and CRE-LTS were used. The effects of longitudinal impacts from in-train forces on wagon dynamics in curves were studied using longitudinal train simulation and detailed wagon dynamics simulation. In-train force impacts were produced using a train control action. The resulting worst-case in-train forces resulting from these simulations were applied to the coupler pin of the wagon dynamics simulation model. The wagon model was used to study the effect of these in-train forces when applied in curves and transitions at an angle to the wagon longitudinal axis. The effects of different levels of coupler impact forces resulting from different levels of coupling slack were also studied. Maximum values for wheel unloading and L/V ratio for various curve radii and coupler slack conditions were identified. The results demonstrated that the derailment criteria for wheel unloading could be exceeded for a coupler slack of 50mm and 75mm on sharper curves, up to 400m radii. A detailed study of the effect of steady in-train forces on wagon dynamics on curves also was completed. Steady in-train forces were applied to a three wagon model using VAMPIRE. Maximum and minimum values of wheel unloading and L/V ratio were identified to demonstrate the level of vehicle stability for each scenario. The results allowed the worse cases of wheel unloading and L/V ratio to be studied in detail. Probability density functions were constructed for the occurrence of longitudinal forces and coupler angles for the Monto and North Coast Lines. Data was simulated for a coupler slack of 25, 50 and 75mm and force characteristics were further classified into the occurrences of impact and non-impact forces. These probability density functions were analysed for each track section to investigate the effects of coupler slack, track topography and gradient on wagon dynamics. The possible wagon instability in each of these scenarios was then assessed to give a measure of the potential consequences of the event. Risk assessment techniques were used to categorise levels of risk based on the consequences and likelihood of each event. It was found that for the train configuration simulated, the Monto Line has a higher derailment risk than the North Coast Line for many of the scenarios studies in this thesis. For a coupler slack of 25mm no derailment risks were identified, 50mm coupler slack derailment risks were only identified on the Monto track and the majority of derailment risks were identified for a 75mm coupler slack." -- abstract.
Book Synopsis Wheelclimb Derailment Processes and Derailment Criteria by : Larry M. Sweet
Download or read book Wheelclimb Derailment Processes and Derailment Criteria written by Larry M. Sweet and published by . This book was released on 1983 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most widely accepted criterion for wheelclimb derailment defines an upper limit for safe operation on wheel/rail contact forces on the climbing wheel, with the limit varying with time duration of the forces. For dynamic wheelclimb processes with significant lateral velocities, lateral forces may be measured for short time durations that are larger than those that may be sustained without derailment in steady state. To study wheelclimb derailment processes and evaluate derailment criteria, a series of derailment experiments was conducted using a one-fifth scale model of a single wheelset on tangent track subjected to static and dynamic loading conditions. The results of these experiments were compared to simulations based on a nonlinear theory developed to represent the important phenomena associated with dynamic wheelclimb. This study shows that the Japanese National Railways (JNR) and other time-duration dependent criteria based on wheel load measurements alone are unsuccessful in predicting derailment safety for dynamic wheelclimb. For wheelclimb processes involving negligible lateral velocities, the derailment limit can be estimated from quasi-steady analysis of wheel/rail forces. Evidence has been found that derailment criteria employing variables measured in addition to wheel loads may be successful in predicting derailment safety, and that diagnostic criteria may be developed for warning of impending derailment.
Book Synopsis Urban Habitat Constructions Under Catastrophic Events by : Federico M. Mazzolani
Download or read book Urban Habitat Constructions Under Catastrophic Events written by Federico M. Mazzolani and published by CRC Press. This book was released on 2010-08-30 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: COST is an intergovernmental framework for European Cooperation in Science and Technology, allowing the coordination of nationally-funded research on a European level. Part of COST was COST Action C26Urban Habitat Constructions Under Catastrophic Events which started in 2006 and held its final conference in Naples, Italy, on 16-18 September 201
Book Synopsis Analysis of Railroad Wheel Failure- Derailment at Richmond Hill, New York, March 10, 1973 by :
Download or read book Analysis of Railroad Wheel Failure- Derailment at Richmond Hill, New York, March 10, 1973 written by and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical Review and Expansion of Certain Statistical Models Relating Rollover to Precrash Factors by : Hans C. Joksch
Download or read book Analytical Review and Expansion of Certain Statistical Models Relating Rollover to Precrash Factors written by Hans C. Joksch and published by . This book was released on 1994 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Human Factors Models for Aviation Accident Analysis and Prevention by : Thomas G.C. Griffin
Download or read book Human Factors Models for Aviation Accident Analysis and Prevention written by Thomas G.C. Griffin and published by Ashgate Publishing, Ltd.. This book was released on 2015-03-28 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: The investigation and modelling of aviation accident causation is dominated by linear models. Aviation is, however, a complex system and as such suffers from being artificially manipulated into non-complex models and methods. This book addresses this issue by developing a new approach to investigating aviation accident causation through information networks. These networks centralise communication and the flow of information as key indicators of a system’s health and risk. This holistic approach focuses on the system environment, the activity that takes place within it, the strategies used to conduct this activity, the way in which the constituent parts of the system (both human and non-human) interact and the behaviour required. Each stage of this book identifies and expands upon the potential of the information network approach, maintaining firm focus on the overall health of a system. The book’s new model offers many potential developments and some key areas are studied in this research. Through the centralisation of barriers and information nodes the method can be applied to almost any situation. The application of Bayesian mathematics to historical data populations provides scope for studying error migration and barrier manipulation. The book also provides application of these predictions to a flight simulator study for the purposes of validation. Beyond this it also discusses the applicability of the approach to industry. Through working with a legacy airline the methods discussed are used as the basis for a new and prospective safety management system.
Book Synopsis Transportation Accident Analysis and Prevention by : Anton de Smet
Download or read book Transportation Accident Analysis and Prevention written by Anton de Smet and published by Nova Publishers. This book was released on 2008 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to research on transportation accidental injury and damage, including the pre-injury and immediate post-injury phases. It also includes studies of human, environmental and vehicular factors influencing the occurrence, type and severity of transportation accidents and injury; the design, implementation and evaluation of countermeasures; biomechanics of impact and human tolerance limits to injury; modelling and statistical analysis of accident data; policy, planning and decision-making in safety and prevention of traffic accidents.
Book Synopsis Dynamic Analysis of High-Speed Railway Alignment by : Sirong Yi
Download or read book Dynamic Analysis of High-Speed Railway Alignment written by Sirong Yi and published by Academic Press. This book was released on 2017-11-28 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic Analysis of High-Speed Railway Alignment: Theory and Practice elaborates on the dynamic analysis theory and method on spatial alignment parameters of high-speed railways, revealing the interaction mechanism between vehicle-track dynamic performance and track parameters of high-speed railways. It ascertains the influence rules of track structure and track geometry on vehicle-track dynamic performance, establishes the relationship models between vehicle-track dynamic performance and curve dynamic characteristic parameters, and defines the calculation relationship between lateral acceleration of car body on curves and track parameters. This book can be used as a reference book for scientific researchers, engineering technicians and management engaged in railway engineering, and will be very helpful for railway technicians who want to learn more about route planning, design, and construction and maintenance technologies of high-speed railways. Presents the dynamic effects between the running speed of high-speed trains on curves and spatial curve technical parameters Provides dynamic analysis, theory and methods on curve parameters of high-speed railways and improves the calculation theory on spatial alignment of high-speed railways Covers minimum curve radius, transition curve length, minimum radius of vertical curve, steepest slope, minimum slope length and length of intermediate straight line
Book Synopsis Canadian Journal of Civil Engineering by :
Download or read book Canadian Journal of Civil Engineering written by and published by . This book was released on 1991 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
