Understanding Of Rail Wheel Fatigue
DOWNLOAD
Download Understanding Of Rail Wheel Fatigue PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Understanding Of Rail Wheel Fatigue book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Understanding Of Rail Wheel Fatigue
DOWNLOAD
Author : Mohammed Miraj Hayat
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2012
Understanding Of Rail Wheel Fatigue written by Mohammed Miraj Hayat and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
The fatigue problem of rail road wheel which is often referred as rolling contact fatigue is caused by repeated contact stress during the rolling motion. This rolling contact fatigue of rail wheel may cause severe damage to rail wheel, rail, train suspension and sometimes derailment of train. Proper prediction of rail wheel fatigue life and incorporation of appropriate measures to avoid rail wheel are very important issue to be addressed. the proper understanding of underlined mechanism of rolling contact fatigue requires detailed knowledge of interaction of wheel and rail.
Mechanics And Fatigue In Wheel Rail Contact
DOWNLOAD
Author : S.L. Grassie
language : en
Publisher: Elsevier
Release Date : 2012-12-02
Mechanics And Fatigue In Wheel Rail Contact written by S.L. Grassie and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Technology & Engineering categories.
These proceedings demonstrate the increasing interest and importance of contact mechanics and wear to the railway industry. The 27 contributions succeed in sustaining a balance between mechanics and metallurgy, theory and practice, and will be of considerable interest to those engaged in research, as well as practising engineers.
Thermomechanical And Vibrational Fatigue Life Assessment Of Railway Wheels
DOWNLOAD
Author : Saravanakumar Sekar
language : en
Publisher:
Release Date : 2021
Thermomechanical And Vibrational Fatigue Life Assessment Of Railway Wheels written by Saravanakumar Sekar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.
Rail wheel failures can lead to derailment of trains, cost lives and billions of dollars to the railway industry. Therefore, it is important to understand the failure behavior of critical components of the train, especially the ones which are exposed to extreme weather conditions. This understanding is much needed to develop effective risk management procedures. Most research studies in wheel fatigue life estimation did not account for structural, thermal and prestressed random vibrational loading as a coupled field. The present study develops an advanced numerical analysis methodology that incorporates real service conditions to calculate fatigue life. Firstly, a validation study was carried out before the fatigue life estimation. The prime objective of this validation study is to verify that the contact pressure observed in the Ansys FEA analysis is consistent with the Hertzian contact theory. The contact pressure estimated by Ansys simulation is 656 MPa and the mathematical calculation is 680 MPa showing therefore a variation of only 1.25%. Having verified the FEA model with a theoretical calculation, a full three-dimensional finite element analysis is developed to estimate fatigue life considering static, thermal and vibrational loadings. Mesh sensitivity study, selection of the appropriate contact formulation and detection method aided further to increase the accuracy of the FEA results. Secondly, having achieved a good validation between FEA and Hertzian theory, the major findings of this preliminary study such as second-order hexahedron with 10 mm element size and contact settings of normal Lagrange formulation and nodal normal from contact detection method to be adopted for the thermo-mechanical and pre-stressed vibration analyses. The fatigue life of the wheel was estimated using the stress life approach for thermo-mechanical loading and the Steinberg approach was utilized for the dynamic loading cases. This robust methodology was finalized using a typical rail-track subassembly comprised of a wheel, track, axle, ballast and sleepers. Finally, the developed methodology was used to estimate the fatigue life of the train wheel which failed and caused a derailment in Manitoba (Canada). This case study was performed to verify the proposed FEA methodology and to understand the level of applicability and accuracy in terms of failure location and failure mode prediction. The contact pressure estimated by Ansys simulation was 1028 MPa and from theory was 1188 MPa. This shows that a variation of 15% was observed. The simulation shows a good validation with the real case as the location of the major failure was accurately predicted by the thermomechanical FEA analysis. Subsurface failures that occurred in the circumference of the wheel are predicted by the vibrational FEA fatigue analysis. Hence, this FEA methodology can be employed for any wheel to estimate the fatigue life in the design phase in a better way. Estimating the fatigue life during the design phase has many advantages and having a robust methodology to aid this process is very important. This research aimed at developing an FEA methodology that helps fatigue life estimation process in the design phase. With this research approach, a robust design can be built with minimal cost. Not only the approach has the advantage of minimal product development cost but it also aims at reducing many life-threatening disasters due to derailments caused by wheel failures.
A Fatigue Analysis Of The Effects Of Wheel Load On Rail Life
DOWNLOAD
Author : Roger King Steele
language : en
Publisher:
Release Date : 1988
A Fatigue Analysis Of The Effects Of Wheel Load On Rail Life written by Roger King Steele and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with PHOENIX (Computer program) categories.
Fatigue In Railway Infrastructure
DOWNLOAD
Author : Mark Robinson
language : en
Publisher: Elsevier
Release Date : 2009-08-20
Fatigue In Railway Infrastructure written by Mark Robinson and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-08-20 with Technology & Engineering categories.
Fatigue is a major issue affecting safety and quality of service in the railway industry. This book reviews key aspects of this important subject. It begins by providing an overview of the subject, discussing fatigue at the wheel-rail interface and in other aspects of infrastructure. It then considers fatigue in railway and tramway track, looking at causes of potential failure in such areas as rails and fixings as well as sleepers. It also reviews failure points in structures such as embankments and cuttings. The book analyses fatigue in railway bridges, looking in particular at masonry arch bridges as well as metal and concrete bridges. Two final chapters review safety and reliability issues affecting escalators and lifts.Fatigue in railway infrastructure is a helpful reference for those in the railway industry responsible for infrastructure maintenance as well as those researching this important subject. Provides a concise review of fatigue in the railway infrastructure Examines the causes of potential failure in rails, fixings and sleepers Analyses fatigue in railway bridges including masonry arch, metal and concrete structures
Wheel Rail Interface Handbook
DOWNLOAD
Author : R. Lewis
language : en
Publisher: Elsevier
Release Date : 2009-09-25
Wheel Rail Interface Handbook written by R. Lewis and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-09-25 with Technology & Engineering categories.
Many of the engineering problems of particular importance to railways arise at interfaces and the safety-critical role of the wheel/rail interface is widely acknowledged. Better understanding of wheel/rail interfaces is therefore critical to improving the capacity, reliability and safety of the railway system. Wheel-rail interface handbook is a one-stop reference for railway engineering practitioners and academic researchers. Part one provides the fundamentals of contact mechanics, wear, fatigue and lubrication as well as state-of-the-art research and emerging technologies related to the wheel/rail interface and its management. Part two offers an overview of industrial practice from several different regions of the world, thereby providing an invaluable international perspective with practitioners’ experience of managing the wheel/rail interface in a variety of environments and circumstances. This comprehensive volume will enable practising railway engineers, in whatever discipline of railway engineering – infrastructure, vehicle design and safety, and so on – to enhance their understanding of wheel/rail issues, which have a major influence on the running of a reliable, efficient and safe railway. One-stop reference on the important topic of wheel rail-interfaces Presents the fundamentals of contact mechanics, wear, fatigue and lubrication Examines state-of-the-art research and emerging technologies related to wheel-rail interface and its management
Mechanics And Fatigue In Wheel Rail Contact
DOWNLOAD
Author : S. L. Grassie
language : en
Publisher: Elsevier Publishing Company
Release Date : 1991
Mechanics And Fatigue In Wheel Rail Contact written by S. L. Grassie and has been published by Elsevier Publishing Company this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Technology & Engineering categories.
These proceedings demonstrate the increasing interest and importance of contact mechanics and wear to the railway industry. The 27 contributions succeed in sustaining a balance between mechanics and metallurgy, theory and practice, and will be of considerable interest to those engaged in research, as well as practising engineers.
Rail Quality And Maintenance For Modern Railway Operation
DOWNLOAD
Author : J.J. Kalker
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-04-18
Rail Quality And Maintenance For Modern Railway Operation written by J.J. Kalker and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-18 with Technology & Engineering categories.
In April 1990 a conference was held at the Cracow Institute of Technology, Cracow, Poland. The title of that conference was "Residual Stresses in Rails - Effects on Rail Integrity and Railroad Economics" and its themes were the measurement and prediction of residual stresses in rails, but, as the sub-title suggests, the intention was also to provide a link between research and its application to the practical railway world. At the Cracow conference there were 40 participants with 5 railways and 5 rail makers being represented and 25 papers were given. The Cracow conference was a success, and by March 1991 its off-spring, "The International Conference on Rail Quality and Maintenance for Modern Railway Operations", was conceived and birth was ultimately given in June 1992 at the Technical University, Delft. It turned out to be some baby, with 112 delegates from 24 countries taking part! As with its predecessor, the conference was to provide a forum for the exchange of ideas between research investigators, rail makers and railway engineers. A cursory examination of the list of participants suggests that about 57% were from the railway industry, 34% from universities and other research institutions and 9% from the steel industry. Bearing in mind that some of the railway industry participants were from their respective research and development organisations the balance of interests was about right.
Rolling Contact Fatigue Of Wheel Rail Systems
DOWNLOAD
Author : Anders Ekberg
language : en
Publisher:
Release Date : 1995
Rolling Contact Fatigue Of Wheel Rail Systems written by Anders Ekberg and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
Fatigue Behavior At Aar Class A Railroad Wheel Steel At Ambient And Elevated Transportation
DOWNLOAD
Author : U.s. Department of Transportation
language : en
Publisher: CreateSpace
Release Date : 2014-05-26
Fatigue Behavior At Aar Class A Railroad Wheel Steel At Ambient And Elevated Transportation written by U.s. Department of Transportation and has been published by CreateSpace this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-26 with Transportation categories.
Service loading conditions for railroad wheels include those due to wheel-on-rail contact, as well as thermal loads from frictional heating during on-tread braking. Studies have shown the wheel surface temperatures can reach 1000 degrees Fahrenheit during stop-breaking.