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E. Stewart¹, H. Hemida² and C. Roberts¹

¹School of Electronic, Electrical and Computer Engineering, University of Birmingham, United Kingdom
²School of Civil Engineering, University of Birmingham, United Kingdom

Keywords: railways, switch and crossing, finite element, lock stretcher bar, save envelope.

Summary

The lock stretcher bar (LSB) is an important component of some types of railway switches in which it plays a major and dynamic role in setting the switch for and guiding the trains to the proper route. If the LSB is damaged, deformed or broken then the switching operation cannot be completed. The work presented in this paper is an investigation into the performance of the LSB under several different operational and assembly conditions. Full three-dimensional finite element (FE) simulations have been conducted on an isolated LSB from a short, shallow depth, switch to investigate its performance under various deformations and loads. To validate the FE model, experimental work has been carried out and good agreement was obtained between the measured and computed data. The FE model was then used to obtain the safe envelop of the LSBs operating range. A proposed new design variation for the LSB has been tested in simulations and its structural performance has been compared with that of the existing designs with significant improvements identified.

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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: 105 PROCEEDINGS OF THE NINTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY Edited by: Paper 11 Structural Performance Analysis of the Lock Stretcher Bar in a Railway Switch E. Stewart¹, H. Hemida² and C. Roberts¹ ¹School of Electronic, Electrical and Computer Engineering, University of Birmingham, United Kingdom ²School of Civil Engineering, University of Birmingham, United Kingdom doi:10.4203/ccp.105.11 purchase the full-text of this paper Full Bibliographic Reference for this paper E. Stewart, H. Hemida, C. Roberts, "Structural Performance Analysis of the Lock Stretcher Bar in a Railway Switch", in , (Editors), "Proceedings of the Ninth International Conference on Engineering Computational Technology", Civil-Comp Press, Stirlingshire, UK, Paper 11, 2014. doi:10.4203/ccp.105.11 Keywords: railways, switch and crossing, finite element, lock stretcher bar, save envelope. Summary The lock stretcher bar (LSB) is an important component of some types of railway switches in which it plays a major and dynamic role in setting the switch for and guiding the trains to the proper route. If the LSB is damaged, deformed or broken then the switching operation cannot be completed. The work presented in this paper is an investigation into the performance of the LSB under several different operational and assembly conditions. Full three-dimensional finite element (FE) simulations have been conducted on an isolated LSB from a short, shallow depth, switch to investigate its performance under various deformations and loads. To validate the FE model, experimental work has been carried out and good agreement was obtained between the measured and computed data. The FE model was then used to obtain the safe envelop of the LSBs operating range. A proposed new design variation for the LSB has been tested in simulations and its structural performance has been compared with that of the existing designs with significant improvements identified. 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 £45 +P&P)
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