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G. Prinz, J. Fuchs, B. Luber, "Calibrated Superstructure Model for Ballast Condition Monitoring in Turnouts", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 6.7, 2024, doi:10.4203/ccc.7.6.7

Keywords: multi body dynamics, switches & crossings, railway turnouts, superstructure model, flexible body, model order reduction.

Abstract

Increasing demands for reliability and safety in rail transport require a detailed understanding of the vehicle-track interaction. However, in turnout zones, where track properties change, standard multi-body dynamic models using a co-running track formulation reach their limits. In particular, the interaction of sleepers and ballast cannot be accurately modelled. To overcome this problem, an extended superstructure model with individual sleepers and elastic rails, modelled as reduced finite element bodies, is proposed. The model order of the rails is reduced by modal reduction to accurately capture eigenfrequencies up to 1500 Hz. Furthermore, the model is calibrated with measured data from a turnout in Austria and shows good agreement with the data. In ongoing research, the model is being used to develop a condition monitoring system and a prediction model for ballast settlement in turnout areas.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 7 PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 6.7 Calibrated Superstructure Model for Ballast Condition Monitoring in Turnouts G. Prinz, J. Fuchs and B. Luber Rail Systems, Virtual Vehicle Research GmbH, Graz, Austria doi:10.4203/ccc.7.6.7 Full Bibliographic Reference for this paper G. Prinz, J. Fuchs, B. Luber, "Calibrated Superstructure Model for Ballast Condition Monitoring in Turnouts", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 6.7, 2024, doi:10.4203/ccc.7.6.7 Keywords: multi body dynamics, switches & crossings, railway turnouts, superstructure model, flexible body, model order reduction. Abstract Increasing demands for reliability and safety in rail transport require a detailed understanding of the vehicle-track interaction. However, in turnout zones, where track properties change, standard multi-body dynamic models using a co-running track formulation reach their limits. In particular, the interaction of sleepers and ballast cannot be accurately modelled. To overcome this problem, an extended superstructure model with individual sleepers and elastic rails, modelled as reduced finite element bodies, is proposed. The model order of the rails is reduced by modal reduction to accurately capture eigenfrequencies up to 1500 Hz. Furthermore, the model is calibrated with measured data from a turnout in Austria and shows good agreement with the data. In ongoing research, the model is being used to develop a condition monitoring system and a prediction model for ballast settlement in turnout areas. download the full-text of this paper (PDF, 3879 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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