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Digital
Library of the European Council for Modelling
and Simulation |
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Title: |
Studying The Behaviour Of
Crushed Stone Railway Ballast Subjected To Periodic Load |
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Authors: |
Akos
Orosz, Kornel Tamas, Janos P. Radics, Miklos Galos |
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Published in:
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(2019). ECMS 2019
Proceedings Edited by: Mauro Iacono, Francesco Palmieri, Marco Gribaudo,
Massimo Ficco, European Council for Modeling and Simulation. DOI: http://doi.org/10.7148/2019 ISSN:
2522-2422 (ONLINE) ISSN:
2522-2414 (PRINT) ISSN:
2522-2430 (CD-ROM) 33rd International ECMS Conference on
Modelling and Simulation,
Caserta, Italy, June 11th – June 14th, 2019 |
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Citation
format: |
Akos Orosz, Kornel Tamas, Janos P. Radics, Miklos Galos (2019). Studying The Behaviour Of Crushed Stone Railway Ballast Subjected To Periodic Load, ECMS 2019 Proceedings Edited by: Mauro Iacono, Francesco Palmieri, Marco Gribaudo, Massimo Ficco European Council for Modeling and Simulation. doi: 10.7148/2019-0384 |
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DOI: |
https://doi.org/10.7148/2019-0384 |
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Abstract: |
The crushed
rocks of the railway ballast are subjected to repeated loads due to train
traffic. Most of the forces are taken by a relatively small portion of rocks,
which are located in a volume underneath the rail fastenings. In this study,
a combined experimental and simulation method is introduced, which applies a
load that results similar forces compared to the real ones acting in that
small volume. During this test, the aggregate is disposed in a mortar, then periodic normal force is applied. The effect of
different grain shapes was studied on the mechanical behaviour of the
aggregate by the examination of the compression of the pack over time due to
the periodic force. The crushing of the grains was also measured. We also
present, how the number of time and cost demanding measurements can be
reduced by the application of discrete element numerical simulation. |
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