Computational Technology Resources - CCP

F. Cheli, S. Giappino, G. Tomasini, M. Villani, G. Zanetti, "Aerodynamic Loads on Lightweight Railway Vehicles for the Evaluation of Rollover Risk", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 30, 2014. doi:10.4203/ccp.104.30

Keywords: lightweight railway, crosswind, rollover risk, force aerodynamics coefficients, wind tunnel tests.

Summary

In this paper, the effects of lateral wind on two different light-weight trains, characterised by different geometries and lengths and by different mass distribution, are investigated. In order to compare the two trains in terms of response to cross wind, two subsequent analyses have been performed: measurement of the force aerodynamic coefficients by means of wind tunnel tests on scale models, and evaluation of the rollover risk by means of the definition of the characteristic wind curve (CWC) through a simplified numerical procedure, based on the static equilibrium, proposed by the TSI standard (three mass model). As expected, the longer train presents the larger aerodynamic coefficients. However, differences on the lateral force coefficient and rolling moment coefficient arise also due to the different geometry of the trains in the upper part of the carbody. Finally, from the CWC evaluation, it has been found that variations between the two trains reduce at low wind angle and at low 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 £65 +P&P)

	Computational & Technology Resources an online resource for computational, engineering & technology publications
	not logged in - login
Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 104 PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 30 Aerodynamic Loads on Lightweight Railway Vehicles for the Evaluation of Rollover Risk F. Cheli¹, S. Giappino¹, G. Tomasini¹, M. Villani¹ and G. Zanetti² ¹Department of Mechanical Engineering, Politecnico di Milano, Italy ²AnsaldoBreda Costruzioni Ferroviarie, Pistoia, Italy doi:10.4203/ccp.104.30 purchase the full-text of this paper Full Bibliographic Reference for this paper F. Cheli, S. Giappino, G. Tomasini, M. Villani, G. Zanetti, "Aerodynamic Loads on Lightweight Railway Vehicles for the Evaluation of Rollover Risk", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 30, 2014. doi:10.4203/ccp.104.30 Keywords: lightweight railway, crosswind, rollover risk, force aerodynamics coefficients, wind tunnel tests. Summary In this paper, the effects of lateral wind on two different light-weight trains, characterised by different geometries and lengths and by different mass distribution, are investigated. In order to compare the two trains in terms of response to cross wind, two subsequent analyses have been performed: measurement of the force aerodynamic coefficients by means of wind tunnel tests on scale models, and evaluation of the rollover risk by means of the definition of the characteristic wind curve (CWC) through a simplified numerical procedure, based on the static equilibrium, proposed by the TSI standard (three mass model). As expected, the longer train presents the larger aerodynamic coefficients. However, differences on the lateral force coefficient and rolling moment coefficient arise also due to the different geometry of the trains in the upper part of the carbody. Finally, from the CWC evaluation, it has been found that variations between the two trains reduce at low wind angle and at low 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 £65 +P&P)
Back to top	©Civil-Comp Limited 2023 - terms & conditions