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J.A. Romero, M.A. Alvarado Morales, G.M. Arroyo Contreras, E. Betanzo-Quezada, "A Train-Track Dynamic Interaction Model", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 124, 2015. doi:10.4203/ccp.108.124

Keywords: railways, bending stress, soft supports, railway-track interaction, finite element.

Summary

Railway safety depends on a variety of factors that include the properties and operational conditions of both the railway vehicles and the infrastructure. In this context, the rail fracture has been identified as a critical situation leading to derailments. This loss of integrity of the rail material is the result of the cyclic loading causing material fatigue, where the stresses derive from a combination of loadings that include normal and shearing forces as well as bending moments. In this respect, bending would be the most influential loading for rail fatigue, and it depends on a multitude of factors that are deeply influenced by the maintenance practices considered for such infrastructures. This paper proposes a coupled train - track dynamic interaction model, which is used to study the effect of an individual soft support on the level of bending stress developed on the adjacent beam node. The model considers a finite element approach to model the infrastructure while the vehicle is modelled under the principles of multibody dynamics. Results indicate that having a soft support can notably increase the stress level in the adjacent beam node, from between eight and thirty percent as a function of the level of stiffness reduction and vehicle speed.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 108 PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping Paper 124 A Train-Track Dynamic Interaction Model J.A. Romero, M.A. Alvarado Morales, G.M. Arroyo Contreras and E. Betanzo-Quezada Faculty of Engineering, Queretaro Autonomous University, Mexico doi:10.4203/ccp.108.124 purchase the full-text of this paper Full Bibliographic Reference for this paper J.A. Romero, M.A. Alvarado Morales, G.M. Arroyo Contreras, E. Betanzo-Quezada, "A Train-Track Dynamic Interaction Model", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 124, 2015. doi:10.4203/ccp.108.124 Keywords: railways, bending stress, soft supports, railway-track interaction, finite element. Summary Railway safety depends on a variety of factors that include the properties and operational conditions of both the railway vehicles and the infrastructure. In this context, the rail fracture has been identified as a critical situation leading to derailments. This loss of integrity of the rail material is the result of the cyclic loading causing material fatigue, where the stresses derive from a combination of loadings that include normal and shearing forces as well as bending moments. In this respect, bending would be the most influential loading for rail fatigue, and it depends on a multitude of factors that are deeply influenced by the maintenance practices considered for such infrastructures. This paper proposes a coupled train - track dynamic interaction model, which is used to study the effect of an individual soft support on the level of bending stress developed on the adjacent beam node. The model considers a finite element approach to model the infrastructure while the vehicle is modelled under the principles of multibody dynamics. Results indicate that having a soft support can notably increase the stress level in the adjacent beam node, from between eight and thirty percent as a function of the level of stiffness reduction and vehicle speed. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £75 +P&P)
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