A direct method for analyzing the nonlinear vehicle-structure interaction in high-speed railway lines

Neves, Sérgio, Montenegro, P. A., Azevedo, A.F.M. and Calcada, R. (2014) A direct method for analyzing the nonlinear vehicle-structure interaction in high-speed railway lines. In: Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance. Civil-Comp Proceedings (104). Civil-Comp Press, Ajaccio, Corsica, France. ISBN 978-1-905088-59-1

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Abstract

This article presents an accurate, efficient and stable algorithm to analyse the
nonlinear vertical vehicle-structure interaction. The governing equilibrium equations
of the vehicle and structure are complemented with additional constraint equations
that relate the displacements of the vehicle with the corresponding displacements of
the structure. These equations form a single system, with displacements and contact
forces as unknowns, that is solved using an optimized block factorization algorithm.
Due to the nonlinear nature of contact, an incremental formulation based on the
Newton method is adopted. The track and structure are modelled using finite
elements to take into account all the significant deformations. In the numerical
example presented, the passage of the KHST over a railway viaduct is analysed,
being the accuracy and computational efficiency of the proposed method clearly
demonstrated.

Item Type:	Book Chapter
Contributors:	Contribution Name Email ORCID UNSPECIFIED Pombo, J. UNSPECIFIED UNSPECIFIED
Subjects:	T Technology > TF Railroad engineering and operation
Schools:	School of Computing and Engineering School of Computing and Engineering > Institute of Railway Research
Related URLs:	Author
Depositing User:	Sergio Neves
Date Deposited:	17 Feb 2015 13:53
Last Modified:	28 Aug 2021 18:34
URI:	http://eprints.hud.ac.uk/id/eprint/23142

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