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Civil-Comp Proceedings
ISSN 1759-3433
ISSN 1759-3433
CCP: 104
PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE
Edited by: J. Pombo
Paper 53
Ballasted Track Maintenance with a Multi-Unit Tamping Machine: A Numerical Discrete Efficiency Comparison
C. Voivret1, R. Perales2 and G. Saussine1
1Innovation and Research, SNCF, Paris, France
2Matis technologies, Tour Norma, Puteaux, France
Full Bibliographic Reference for this paper
C. Voivret, R. Perales, G. Saussine, "Ballasted Track Maintenance with a Multi-Unit Tamping Machine: A Numerical Discrete Efficiency Comparison", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 53, 2014. doi:10.4203/ccp.104.53
Keywords: multi-group tamping, ballast, discrete simulation, contact dynamics.
Summary
By means of discrete numerical simulation using the contact dynamics method, the
efficiency differences between different tamping configurations varying in terms of
number of units is investigated. On the same portion of track composed of nine blocks
and nearly 115000 grains of ballast (modelled as polyhedron), the track is numerically
tamped using single, double, triple and quadruple unit tamping machines. Beyond the
obvious gain in time provided by the use of multiple units, in this paper the focus is
on the compaction and on the stress applied to the track components as a function of
the number of units.
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