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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 110
Edited by: J. Pombo
Paper 184

Techniques Adopted in Finite Element Analysis of Uniformly Accelerated Moving Loads

D. Domingues1, S. Souteiro1, M.M. Neves2 and P. Koziol3

1DEM, Instituto Superior Tecnico, Universidade de Lisboa, Portugal
2LAETA, IDMEC, Instituto Superior Tecnico, Universidade de Lisboa, Portugal
3Chair of Rail and Air Transport Infrastructure, Cracow University of Technology, Poland

Full Bibliographic Reference for this paper
D. Domingues, S. Souteiro, M.M. Neves, P. Koziol, "Techniques Adopted in Finite Element Analysis of Uniformly Accelerated Moving Loads", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 184, 2016. doi:10.4203/ccp.110.184
Keywords: accelerated moving load, finite element, numerical implementation, transient analysis, beam, vibration.

The objective of this paper is to present implementation schemes adopted by the authors for transient finite element analysis of accelerated or decelerated moving loads running over a beam. Essentially, it is focused on the modifications adopted by them in the finite element model in order to change from a uniform velocity scheme to a uniformly accelerated scheme. The examples show the convergence of the results obtained for the deflection of the beam with the increase in the number of time steps. Analytical results are required for validation of the proposed finite element approach. Such preliminary results are obtained for railway applications in the case of rail longitudinal vibrations.

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