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M. Carvalho¹ and J. Milho^2,3

¹Research and Development Unit for Mechanical and Industrial Engineering, Faculty of Science and Technology, Universidade Nova de Lisboa, Portugal
²Institute of Mechanical Engineering, Instituto Superior Técnico, Universidade de Lisboa, Portugal
³Department of Mechanical Engineering, Instituto Superior de Engenharia de Lisboa, Politchenic Institute of Lisbon, Portugal

Keywords: railway, crashworthiness, passive safety, simulation, injury, biomechanics.

Summary

The study presented, in this paper, concerns the analysis of the backrest table design during crashes of railway vehicles, focusing on the protection of the occupants of the railway coach interiors. A railway accident is described by the primary collision, in which the vehicle is subjected to an abrupt deceleration causing the unrestrained occupants to continue the original motion. Then the occupants are projected through the vehicle until the secondary collision occurs by their contact with some part of the interior of the vehicle or with other occupants. The strategy combines and explores the already developed railway structures for crashworthiness with injury biomechanics. The methodology attends the railway accidents specificities such as the existence of restraints and the larger distance between contact features, which decreases the predictability on the kinematics of the occupants. Due to its importance in terms of railway vehicle interiors, the inline seating with backrest table being used is investigated in order to identify the potential sources of injury for railway occupants. The analysis is made using a numerical model of a reference simulation scenario characterized by the seating pitch of the first class coach. Simulation results suggest design modifications that are discussed in the scope of the reduction of the biomechanical injury indices for the occupants.

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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 128 Backrest Table Design for Railway Coach Interior Occupant Protection M. Carvalho¹ and J. Milho^2,3 ¹Research and Development Unit for Mechanical and Industrial Engineering, Faculty of Science and Technology, Universidade Nova de Lisboa, Portugal ²Institute of Mechanical Engineering, Instituto Superior Técnico, Universidade de Lisboa, Portugal ³Department of Mechanical Engineering, Instituto Superior de Engenharia de Lisboa, Politchenic Institute of Lisbon, Portugal doi:10.4203/ccp.108.128 purchase the full-text of this paper Full Bibliographic Reference for this paper M. Carvalho, J. Milho, "Backrest Table Design for Railway Coach Interior Occupant Protection", 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 128, 2015. doi:10.4203/ccp.108.128 Keywords: railway, crashworthiness, passive safety, simulation, injury, biomechanics. Summary The study presented, in this paper, concerns the analysis of the backrest table design during crashes of railway vehicles, focusing on the protection of the occupants of the railway coach interiors. A railway accident is described by the primary collision, in which the vehicle is subjected to an abrupt deceleration causing the unrestrained occupants to continue the original motion. Then the occupants are projected through the vehicle until the secondary collision occurs by their contact with some part of the interior of the vehicle or with other occupants. The strategy combines and explores the already developed railway structures for crashworthiness with injury biomechanics. The methodology attends the railway accidents specificities such as the existence of restraints and the larger distance between contact features, which decreases the predictability on the kinematics of the occupants. Due to its importance in terms of railway vehicle interiors, the inline seating with backrest table being used is investigated in order to identify the potential sources of injury for railway occupants. The analysis is made using a numerical model of a reference simulation scenario characterized by the seating pitch of the first class coach. Simulation results suggest design modifications that are discussed in the scope of the reduction of the biomechanical injury indices for the occupants. 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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