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Dissertations / Theses on the topic 'STRESS ANALYSIS OF RAIL WHEEL'

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Published: 11 September 2023

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1

Bian, Jian. "Ultimate flexural limit states analysis of prestressed concrete sleeper." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/63660/1/Jian_Bian_Thesis.pdf.

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Railway is one of the most important, reliable and widely used means of transportation, carrying freight, passengers, minerals, grains, etc. Thus, research on railway tracks is extremely important for the development of railway engineering and technologies. The safe operation of a railway track is based on the railway track structure that includes rails, fasteners, pads, sleepers, ballast, subballast and formation. Sleepers are very important components of the entire structure and may be made of timber, concrete, steel or synthetic materials. Concrete sleepers were first installed around the m
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2

Telliskivi, Tanel. "Wheel-rail Interaction Analysis." Doctoral thesis, KTH, Machine Design, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3532.

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<p>A general approach to numerically simulating wear in rollingand sliding contacts is presented in this thesis. A simulationscheme is developed that calculates the wear at a detailedlevel. The removal of material follows Archard’s wear law,which states that the reduction of volume is linearlyproportional to the sliding distance, the normal load and thewear coefficient. The target application is the wheel-railcontact.</p><p>Careful attention is paid to stress properties in the normaldirection of the contact. A Winkler method is used to calculatethe normal pressure. The model is calibrated eith
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3

Zhan, Yun, and 詹云. "Finite element analysis of vibration excited by rail-wheel interaction." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/208053.

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4

BOZZONE, MICHELANGELO. "Dynamic analysis of railway systems using computationally efficient wheel-rail contact models." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2010. http://hdl.handle.net/2108/1332.

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La presente tesi descrive l’analisi dinamica condotta su un sistema ferroviario quale una sala , un carrello e un vagone. La posizione dei punti di contatto tra la ruota e la rotaia è determinata tramite lo studio delle posizioni di equilibrio della sala poggiata su una coppia di rotaie. L’analisi permette anche di determinare la normale e le curvature principali delle superfici della ruota e della rotaia nei punti di contatto. Al fine di ridurre i tempi di calcolo, i risultati dello studio sono stati memorizzati in una tabella di calcolo usata per l’analisi dinamica della sala, del carrell
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5

Rinaldi, Elisa. "3D Finite Element Analysis of Wheel/Rail normal contact problem using ANSYS software." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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La meccanica del contatto fra ruota ferroviaria e rotaia, è una delle più importanti aree di studio nell’Ingegneria Ferroviaria. Ad oggi, un vasto numero di formulazioni analitiche sono state proposte dai ricercatori, con lo scopo di valutare i parametri di contatto tra ruota e rotaia ed arrivare ad una descrizione affidabile delle forze che agiscono nell’area di contatto. Comunque, solo alcuni dei metodi disponibili permettono di considerare, nelle loro elaborazioni, la reale geometria di contatto tra ruota e rotaia o la non linearità delle proprietà dei materiali impiegati. Un’alternativa ai
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6

White, Ben. "Using tribo-chemistry analysis to understand low adhesion in the wheel-rail contact." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/21007/.

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Low adhesion between wheel and rail is a recurrent problem for the rail industry. Low adhesion can lead to wheel slides and slips during acceleration and deceleration, which can cause large amounts of damage to the wheel and rail as well as causing safety issues and delays if a train cannot accelerate or decelerate when necessary. Adhesion in the wheel-rail contact is affected by the third body layer which is present in the contact patch between wheel and rail. It is composed naturally from steel wear debris and iron oxides, but often contains other contaminants such as organic matter, ballast
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7

Dareeju, Biyanvilage. "Performance evaluation of unsaturated rail track foundations under cyclic moving wheel load." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/102697/4/Biyanvilage%2520Sampath%2520Sri%2520Sameera_Dareeju_Thesis.pdf.

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This thesis developed an alternative laboratory element testing method to evaluate the response of the unsaturated soils of rail track foundations under repeated moving wheel loadings. The novel laboratory testing method is more capable of producing the realistic strength-deformation characteristics of the unsaturated soils with the effects of principal stress axis rotation (PSAR), which can be used to redesign the conservative rail track guidelines.
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8

Lee, Hyunwook. "A Polynomial Chaos Approach for Stochastic Modeling of Dynamic Wheel-Rail Friction." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/77195.

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Accurate estimation of the coefficient of friction (CoF) is essential to accurately modeling railroad dynamics, reducing maintenance costs, and increasing safety factors in rail operations. The assumption of a constant CoF is popularly used in simulation studies for ease of implementation, however many evidences demonstrated that CoF depends on various dynamic parameters and instantaneous conditions. In the real world, accurately estimating the CoF is difficult due to effects of various uncertain parameters, such as wheel and rail materials, rail roughness, contact patch, and so on. In this st
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9

Zong, Nannan. "Development of optimal designs of insulated rail joints." Thesis, Queensland University of Technology, 2013. https://eprints.qut.edu.au/61125/1/Nannan_Zong_Thesis.pdf.

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Proper functioning of Insulated Rail Joints (IRJs) is essential for the safe operation of the railway signalling systems and broken rail identification circuitries. The Conventional IRJ (CIRJ) resembles structural butt joints consisting of two pieces of rails connected together through two joint bars on either side of their web and the assembly is held together through pre-tensioned bolts. As the IRJs should maintain electrical insulation between the two rails, a gap between the rail ends must be retained at all times and all metal contacting surfaces should be electrically isolated from each
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10

Hopkins, Brad Michael. "A Wavelet-Based Rail Surface Defect Prediction and Detection Algorithm." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/77351.

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Early detection of rail defects is necessary for preventing derailments and costly damage to the train and railway infrastructure. A rail surface flaw can quickly propagate from a small fracture to a broken rail after only a few train cars have passed over it. Rail defect detection is typically performed by using an instrumented car or a separate railway monitoring vehicle. Rail surface irregularities can be measured using accelerometers mounted to the bogie side frames or wheel axles. Typical signal processing algorithms for detecting defects within a vertical acceleration signal use a simple
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11

Brabie, Dan. "On Derailment-Worthiness in Rail Vehicle Design : Analysis of vehicle features influencing derailment processes and consequences." Doctoral thesis, Stockholm : Farkost och flyg, Kungliga Tekniskan högskolan, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4548.

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12

Fišer, Petr. "Analytický řešič pro pevnostní výpočet náprav dvojkolí." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230008.

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This master thesis deals with wheel set axles of rail vehicles, their design and methods of implementation stress analysis. In this work, I created a powered locomotive wheel set: axle and wheel. For the purpose of the design department of the Bonatrans Group a.s. company I developed an analytical solver, which allows creating stress analysis, which will be used for verifying finished design and in addition it allows printing of stress analysis as report for the railway´s offices. Next step was a stress analysis of this design of axle in this analytical solver.
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Nishiyama, Kenta. "Analysis of Soil-Tire Interaction Using a Two-Dimensional Finite Element-Discrete Element Method." Kyoto University, 2019. http://hdl.handle.net/2433/245298.

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14

Klepetko, David. "Optimalizace kovaných vysokotlakých elementů zásobníku paliva systému common rail." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228379.

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The subject of this thesis is the optimization of forged high pressure elements of fuel accumu-lator of Common Rail System. The aim of this work is to assess the current state and design the individual high pressure elements in the CAD system. There is implemented strain and stress analysis in the FEM system Abaqus/CAE and in fatigue postprocessor FEMFAT for all designs. On the basis of this analysis are proposed optimized design solutions.
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Santos, Francisco de Carvalho. "Modelo numerico elastoplastico de contato com rolamento aplicado a analise de fadiga de rodas ferroviarias." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263980.

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Orientador: Auteliano Antunes dos Santos Junior<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-08-10T23:11:33Z (GMT). No. of bitstreams: 1 Santos_FranciscodeCarvalho_M.pdf: 2597661 bytes, checksum: 7a02462088e7914e422081012b449048 (MD5) Previous issue date: 2008<br>Resumo: Este trabalho propõe um modelo numérico de contato roda-trilho, baseado no método dos elementos finitos, para estimar a vida em fadiga até o surgimento da trinca, e quanto à falha por escamação, de uma roda ferroviária classe C de um vagão
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16

Kapoun, Lukáš. "Konstrukce disku kola osobního automobilu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231270.

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The present master thesis deals with the design of wheel disk for passenger car. The review part of this thesis summaries the history and development of the wheel; this is followed by a description of individual construction types of wheel disk for passenger car presently used. The construction part of this thesis provides a design of disk of given parameters based on the analysis of forces acting on the car wheel. For the purposes of design, the stress and fatigue analyses are performed.
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Štursa, Martin. "Výložník kombinovaného skládkového stroje." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230556.

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This master’s thesis deals with the construction of parts of a bucket-wheel stacker/reclaimer designed to operate lignite stockyard at coal power plant. First the basic parameters of machine and loads applied in service are defined. The work also includes the design of steel structure of bucket-wheel boom, bucket-wheel, buckets, bucket-wheel drive, shaft, bearings and other parts of bucket-wheel boom. These parts are verified by analytical or finite element analysis.
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18

Merino, Pierrick. "Reproduction expérimentale du contact roue-rail à échelle réduite : Voies de formation des sources de défauts." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI101.

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Face au développement du transport ferroviaire, la sécurité demeure la principale préoccupation des exploitants de réseaux ferrés. En particulier, la compréhension des phénomènes sources des défauts de fatigue de roulement (RCF) mettant en jeu l’intégrité du rail, est nécessaire pour limiter les risques d’accidents. La phase blanche, associée à la formation du défaut de squat, est difficile à reproduire mécaniquement en laboratoire. L’utilisation de bancs d’essai permet de reproduire plusieurs aspects du contact roue-rail selon des critères choisis, mais nécessite de faire des compromis. Le ba
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19

Elsayed, Abdel Hameed Amer Shaltout Ramy. "MULTIBODY APPROACH FOR RAILWAY DYNAMIC ANALYSIS." Doctoral thesis, Universitat Politècnica de València, 2013. http://hdl.handle.net/10251/27622.

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En este trabajo se ha llevado a cabo el desarrollo de una herramienta computacional para la simulación dinámica de vehículos ferroviarios. El modelo está basado en técnicas multicuerpo debidas a Shabana. Con respecto a otras metodologías existentes, la propuesta hace uso de un conjunto de sistemas de referencia que permite el empleo de coordenadas independientes sin la posibilidad de configuraciones singulares debidas a grandes giros. El conjunto de sistemas de referencia sirve de base para formular de manera precisa el problema de contacto rueda-carril. El programa está diseñado para consider
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20

Brabenec, Ladislav. "Topologicko-geometrický návrh a deformačně-napjatostní analýza tvaru disku železničního kola pro různé provozní podmínky na základě analýz LELM." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229933.

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The thesis deals with the behaviour of a cracked rail wheel. The aim was to perform the strain analysis of intact wheel as well as the fracture analysis of the primary direct cracked wheel. Solution includes an analysis of operating conditions, assessment of the substantiality of articular components of load, stiffness of the wheel, a comprehensive analysis of fracture of the selected railway wheel profile and optimization of the wheel shape depending on the matching fracture properties.
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21

Maddela, Naveen. "Finite Element Analysis of Railway Track Wooden Sleeper." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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Railway sleepers have important roles within the complex railroad. Dynamic interaction among Rail, sleeper and ballast supports are vital for the construction of dynamic model track capable of predicting its responses to impact loads due to wheel flats, wheel burns, irregularities of the rail. Railway track deteriorates over time due to the dynamic loading of passing wheeled vehicle. to ensure the secure passing of trains, the track must well design and managed.The objective of this thesis is to determine the stress in wooden rail sleeper by the considering Ballast, Sub ballast, and soil with
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Rec, Matouš. "Návrh testovacího stavu pro stanovení opotřebení u kontaktu železničního kola a kolejnice." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-445166.

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This diploma thesis focuses on the issue of a wear of a railway wheel and a rail. The wear of the components depends on a number of parameters including the contact stress, the contact pressure and the contact surface dimensions. Among the factors determining these parameters belongs primarily the wheel driving gauge, the rail profile and the load of the contact area. Furthermore, the material from which the wheels and rail are made, the roughness and hardness of the functional surfaces and the residual stress in the material have a significant impact on the wear. All the parameters mentioned
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23

Lysák, Jan. "Změna konstrukce profilu dveřního křídla pro kolejové vozidlo." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231683.

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This master thesis deals with creation computional model of specific door leaf which was researched and now is provided by company named IFE-CR, a.s. Finite element method analysis is performed within the standards for load conditions during the operation. Stress-strain response should be the main factor to comparing results with experiment on real door. Based on acquired knowledge from the original model we can evaluate credibility of mechanical behavior of newly designed model which has lower profil tapered from the original 42 mm to 25,4 mm. From the results of FEM analysis of the modified
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Felcman, Miroslav. "Pomocný podvozek pro nosič výměnných nástaveb s návěsovým čepem." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231764.

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Main purpose of the thesis is to carry out a design and a check up of an auxiliary chassis for swap bodies with king pin. The thesis contains pictures of auxiliary chassis made by different producers, followed by my own design. The design contains my own concept of the chassis with purchased parts included. The design of a frame of the auxiliary chassis has been taken in for stress analysis during a number of test loads. Last part of the thesis contains results of stress analysis. Drawings of selected parts are also included. The thesis has been made in cooperation with ZDT Nové Veseli s.r.o.
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Mohyla, Daniel. "Konstrukční návrh nábojů kol vozidla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-378495.

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This diploma thesis deals with design of a wheel hub assembly for a Formula Student vehicle. First part of this thesis is dedicated as an introduction to the Formula Student competition and serves as a summary of design solutions for wheel hubs with a focus on open wheel vehicles. Second part deals with description of a problem and summarizes necessary knowledge and information to solve given problem. Third part is devoted to CAD modelling in software PTC Creo parametric. This model is then analysed using finite element method. Last part of this thesis is a discussion about achieved results an
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Blach, Jiří. "Konstrukční návrh pryžové spojky pro aplikaci v kolejové dopravě." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417544.

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The diploma thesis deals with the design and stress-strain analysis of a flexible coupling composed of individual rubber-textile segments. This concept allows the manufacturer to simplify and unify the production thanks to the ability to use a single segment design for multiple coupling configurations and thus leads to a reduction in costs on the part of the manufacturer. From the consumer side this allows only mechanically or chemically damaged segments to be replaced instead of the entire coupling and saves costs for the potential user. The coupling assembly is primarily designed according t
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Hrabovský, Jozef. "Optimalizační analýza brzdového kotouče." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-227872.

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Subject of this diploma thesis is break wheel optimalization analysis. Break wheels are used in mountain bike downhill races in extreme conditions. It is the first product of this type of an emergent company that was made by the use of intuitive approach. The reason for optimalization is improper behavior of existing solution that occurred during testing. This optimalization consists of finding and analyzing existing characteristics, deciding which factors influence this improper behavior, suggesting new solution and verification of this solution. Break wheel characteristics were detected in a
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Суков, Максим Геннадійович. "Обґрунтування параметрів великогабаритних хвильових зубчастих передач приводів потужних машин". Diss., Національний університет "Львівська політехніка", 2021. https://ena.lpnu.ua/handle/ntb/56684.

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Силовий аналіз деформованого зубчастого зачеплення заснований на фізичних та математичних моделях, які охоплюють тривимірну силову взаємодію гнучкого елемента у сполученнях вищих кінематичних пар. Теоретичні та експериментальні дослідження комплексних моделей забезпечили підвищення точності результатів тривимірного кількісного та якісного розподілення сил у зубчастому зачепленні, а також дозволили визначити граничні умови прояву інтерференції та проскакування зубів. Дослідження кінематичних процесів у зубчастому зачепленні хвильової передачі, дозволили визначити швидкості точок гнучкого коле
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Hušek, Martin. "Londýnské oko." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227180.

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Performance of static analysis of the London Eye structure is the subject of this diploma thesis. First chapters of the thesis analyses overview of realized structures of the Ferris wheel. The main part of the thesis analyses the London Eye structure itself. Specifically are described response analyses, sensitivity analyses, analyses of ultimate limit state and serviceability, stress analyses, analyses of fatigue stress and lifetime analyses. The thesis describes among static analysis also a design of dynamic vibration absorbers. The results of each analysis are evaluated in the final chapters
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Navrátil, Václav. "Snižování hluku kolejových vozidel v traťových obloucích." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-400957.

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SINGH, DEVENDRA. "COMPUTATIONAL STRESS ANALYSIS OF RAIL-WHEEL MODEL OF INDIAN RAILWAYS." Thesis, 2016. http://dspace.dtu.ac.in:8080/jspui/handle/repository/14637.

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ABSTRACT Wheel-rail contact analysis is one of the most standout problems in the modeling and analysis of railway vehicles. The wheel-rail interaction is an exceptional part of rail-vehicle progress as it accounts for the capacity of freight wagon and is being considered the most critical parameter for the freight traffic wagons on the railway tracks. In this thesis, the static response of the wheel on a rail is analyzed by modelling and analyzing the geometries of standard section of Rail and wheel through the softwares Creo parametric 2.0 and Ansys 15.0 for calculating the stresses be
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Lin, Ray-Shang, and 林瑞盛. "Three Dimensional Stress Analysis of Aluminum Wheel." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/00384510176632741995.

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碩士<br>國立成功大學<br>機械工程研究所<br>83<br>Computer aided analysis becomes a powerful tool in developing new products such that the production cost can be saved and the design period is reduced. This paper describes the application of the finite element method to the three dimensional stress ana- lysis of aluminum wheels by using computer aided software ANSYS. The magnitudes and patterns of stress distribution are consistent with the results obtained from experiment. Moreover, the effect of rei
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Zhu, Jian Jun. "Development of an adaptive contact model for analysis of wheel-rail impact load due to wheel flats." Thesis, 2006. http://spectrum.library.concordia.ca/9251/1/zhu_jian_jun_2006.pdf.

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The discontinuities in surface profiles of railway wheels, commonly known as wheel flats, are known to impose excessive impact loads at the wheel-rail interface. Such impact loads can cause premature fatigue and failure of the vehicle-track system components, and impede the operational safety. The safe and cost-effective operations of railways thus necessitate continuous monitoring and control of impact loads induced by wheel defects. In this dissertation research, an adaptive wheel-rail contact model is developed to predict contact geometry and impact force as a function of flat geometry, spe
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Chia-LingHsieh and 謝佳陵. "Numerical Stress Analysis of Bonded Insulated Rail Joints." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/vj349f.

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碩士<br>國立成功大學<br>土木工程學系<br>104<br>In the study, the finite element package of ABAQUS is utilized to numerically analyze the stress distributions of bonded insulated rail joints with different geometries and material properties. At first, a numerical model composed of rails, joint bars, epoxy, bolts, insulated sleeves for bolts, insulated sheet between rails, and sleepers, was generated by using the finite element software. Next, a vertical concentrated load was imposed on the bonded insulated rail joint to simulate the weight of a train passing on it. The effects of the suspended and support
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Fung, Ho Ching, and 何靜芳. "Rail-Wheel Dynamical Analysis by Appling Theory of Periodically Supported Beam under Moving Loads." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/57494240749438010614.

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碩士<br>國立海洋大學<br>系統工程暨造船學系<br>89<br>The aim of this thesis is to establish the theoretical model of the rail-wheel interaction and the induced vibrations. The dynamic analyses regarding all kinds of the existing rail and train in our country have been carried out. The rail on the equidistant sleepers can be considered as a periodically supported beam. Using the theory of rail-wheel interaction, the analyses of the diversely dynamic responses of the train wheels and rails which are installed by the Taiwan Railway, the Taiwan Rapid Transit and the Taiwan High Speed Rail etc., are undertaken. Besi
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Chen, Wei-Yeh, and 陳暐曄. "Stress Analysis of Scooter Frames and Rear-Wheel Suspension Systems." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/12029348952216291473.

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碩士<br>義守大學<br>機械與自動化工程學系碩士班<br>98<br>Scooters are important vehicles in Taiwanese society. We can see lots of scooters on the roads everywhere in Taiwan. Although Taiwan has the highest scooter density in the world, not many people have a basic understanding of this main transportation vehicle. The major types of scooter rear suspension configuration available in the market are the single-shock suspension type and the twin-shock suspension type. However, there is no specific criterion to regulate the suspension configurations which are applied under different circumstances. This thesis utilize
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MARINI, LORENZO. "Development and Experimental Validation of Innovative Models to Predict Wheel and Rail Wear on Complex Railway Networks." Doctoral thesis, 2014. http://hdl.handle.net/2158/854499.

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wei-renn, Chen, and 陳威任. "Geometry design and stress analysis of aluminum alloy wheel under bending load." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/93657153741389675766.

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碩士<br>明志科技大學<br>機電工程研究所<br>99<br>In this thesis, the geometry design and stress analysis of the aluminum alloy wheel have been accomplished. The CAD/CAE softwares SolidWorks and ANSYS are adopted in this study. The bending conditions applied on the wheel obey the SAE rules. Using the finite element analysis, five cases of the 15-inch aluminum wheel have been analyzed. As a result, the Case-5 wheel has good performance for the strength and weight. Its maximum von Mises stress is 142.59 MPa so that the safety factor is enough. By the weight-reduction design process, the mass of Case-5 is reduced
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Tangtragulwong, Potchara. "Optimal Railroad Rail Grinding for Fatigue Mitigation." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8909.

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This dissertation aims to study the benefit of rail grinding on service life of railroad rails, focusing on failures due to rolling contact fatigue (RCF) at the rail head. Assuming a tangent rail with one-point contact at the running surface, a finite element analysis of a full-scale wheel-rail rolling contact with a nonlinear isotropic kinematic hardening material model is performed to simulate the accumulation of residual stresses and strains in the rail head. Using rolling stress and strain results from the sixth loading cycle, in which residual stresses and strains are at their steady-stat
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(9841550), Md Uddin. "Development of wayside rail curve lubrication model for Australian heavy haul lines." Thesis, 2016. https://figshare.com/articles/thesis/Development_of_wayside_rail_curve_lubrication_model_for_Australian_heavy_haul_lines/13387283.

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Wheel and rail wear and ineffective lubrication are serious concerns for rail operators around the globe. These assets have to be maintained and operated effectively to maximise the benefits to the stakeholders and minimise the cost to rail operators. Proper management of the wheel/rail interface helps the rail industry to grow business, improve reliability of service and commitment to their clients. Rail wear and effectiv lubrication are significant issues that have direct impact on operating costs of the rail operation. Wear causes detrimental effects on rail/wheel life and maintenance cost
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Marques, Pedro Filipe Lima. "Modeling complex contact mechanics in railway vehicles for dynamic reliability analysis and design." Doctoral thesis, 2020. http://hdl.handle.net/1822/77055.

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Tese de Doutoramento (Programa Doutoral em Líderes para Indústrias Tecnológicas)<br>O uso de metodologias computacionais para estudar o comportamento dinâmico de veículos ferroviários é cada vez mais comum, pois permite analisar o desempenho do veículo numa dada via, ajudar a projetar sistemas de suspensão, travagem ou tração, estudar o dano dos componentes, entre outros. Neste tipo de ferramentas, a modelação da interação do veículo com a via, traduzindo-se no contacto entre as rodas e os carris, tem particular importância. Posto isto, o presente trabalho visa desenvolver métodos computa
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